a study uses statistical methods to conclude that there is an association between the weights of cars and the amounts of fuel consumption. the study then concludes that adding weight to a car is what makes it consume more fuel. what is wrong with reporting the results of the survey this way?

Answers

Answer 1

The wrong reporting on the survey represented by study uses statistical method is given by option A. The conclusion is based on a correlation that implies causality.

The problem with reporting the results of the survey as 'adding weight to a car is what makes it consume more fuel'.

It implies causality based solely on the observed correlation between car weight and fuel consumption.

Correlation does not imply causation.

Meaning that the fact that two variables are correlated does not necessarily mean that one causes the other.

It is possible that there is a third variable that causes both car weight and fuel consumption to increase.

Or that the correlation is purely coincidental.

It is important to be cautious about interpreting correlation as causation.

And based on statistical methods consider other possible explanations for the observed relationship between the variables.

Therefore, correct answer based on study of statistical methods is option A.  conclusion is based on a correlation that implies causality.

learn more about statistical methods here

brainly.com/question/3996609

#SPJ4

The above question is incomplete, the complete question is:

A study uses statistical methods to conclude that there is an association between the weights of cars and the amounts of fuel consumption. The study then concludes that adding weight to a car is what makes it consume more fuel. What is wrong with reporting the results of the survey this way?

A)The conclusion is based on a correlation that implies causality.

B)The conclusion is based on a small sample.

C)The conclusion is based on a voluntary response sample.

D)The conclusion is based on a bad sample.


Related Questions

By selling a jeans for ₱10,800, John loses 44%. For how much should John sell it to gain 6%.
Requirements:
Given and Mathematical sentence:
Solution:

Thanks in advance!

Answers

John should sell the jeans for ₱20,500 to gain a profit of 6%

what is  formula for Loss Percentage?

if the cost price of a product is more than the selling price, but a profit may be made if the cost price of the product is lower than the price at which it is being sold. Loss percentage= Loss/CP x 100.

Given:

Selling price of jeans with a loss of 44% = ₱10,800

Profit percentage required = 6%

Let the cost price of the jeans be 'x'

Mathematical sentence:

According to the given information, we can write the following equation:

Selling price with loss of 44% = Cost price (1 - Loss %)

⇒ 10800 = x(1 - 0.44)

⇒ x = 10800 / 0.56

⇒ x = 19371.43

To find the selling price with a profit of 6%, we can use the following formula:

Selling price with profit % = Cost price (1 + Profit %)

Substituting the values, we get:

Selling price with profit of 6% = 19371.43(1 + 0.06)

⇒ Selling price with profit of 6% = 20500

Therefore, John should sell the jeans for 20,500 to gain a profit of 6%.

know more about profit visit :

https://brainly.com/question/15036999

#SPJ1

Write the equation of a line that is perpendicular to the line y = 1/2x + 1 and goes through 6 on the x axis​

Answers

Answer:

y = - 2x + 12

Step-by-step explanation:

the equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = [tex]\frac{1}{2}[/tex] x + 1 ← is in slope- intercept form

with slope m = [tex]\frac{1}{2}[/tex]

given a line with slope m then the slope of a line perpendicular to it is

[tex]m_{perpendicular}[/tex] = - [tex]\frac{1}{m}[/tex] = - [tex]\frac{1}{\frac{1}{2} }[/tex] = - 2 , then

y = - 2x + c ← is the partial equation

to find c substitute (6, 0 ) , the point it crosses on the x- axis into the partial equation.

0 = - 2(6) + c = - 12 + c ( add 12 to both sides )

12 = c

y = - 2x + 12 ← equation of perpendicular line

SHORTCUT METHOD :

GIVEN EQUATION IS y = 1/2x + 1

This method teach us in order to write this equation in perpendicular form we will change the coefficient of Y axis in to X axis and X axis into Y axis by a negative of sign WITH ONE of them and rePlace constant term as K

NOW PERPENDICULAR EQUATION CAN BE WRITTEN AS

y = -2x + k

Since the line passes through the point (6,0) on the x-axis, we can substitute these values into the equation to solve for k:

0 = -2(6) + k0 = -12 + kk = 12Therefore, the equation of the line that is perpendicular to y = 1/2x + 1 and passes through the point (6,0) is y = -2x + 12.

develop an estimated regression equation to estimate weekly gross revenue with the amount of television advertising as the independent variable. what is the interpretation of this relationship?

Answers

The estimated relationship may not hold for all levels of TV advertising, and there may be non-linearities or interactions with other variables that should be taken into account in a more sophisticated model.

What is the interpretation of this relationship?

To develop an estimated regression equation to estimate weekly gross revenue with the amount of television advertising as the independent variable, we would need a dataset that includes information on both variables. Assuming we have such a dataset, we could use linear regression to estimate the relationship between the two variables.

The estimated regression equation would take the form:

Weekly Gross Revenue = [tex]b_0 + b_1[/tex]×Amount of TV Advertising + error

where [tex]b_0[/tex] is the intercept (the value of weekly gross revenue when the amount of TV advertising is zero), [tex]b_1[/tex] is the slope (the estimated increase in weekly gross revenue associated with a one unit increase in TV advertising), and error represents the random variation in the relationship between the two variables that is not explained by the model.

The interpretation of the relationship between weekly gross revenue and amount of TV advertising would depend on the sign and magnitude of the slope coefficient

[tex](b_1)[/tex]. If [tex]b_1[/tex] is positive, it would suggest that an increase in TV advertising is associated with an increase in weekly gross revenue. The magnitude of [tex]b_1[/tex] would indicate the strength of this relationship - a larger positive value of[tex]b_1[/tex] would indicate a stronger relationship between TV advertising and weekly gross revenue.

If [tex]b_1[/tex] is negative, it would suggest that an increase in TV advertising is associated with a decrease in weekly gross revenue. This could occur if the advertising is perceived as irritating or offensive to viewers, leading them to avoid the advertised product or service.

It is important to note that correlation does not imply causation, and there may be other factors that affect weekly gross revenue that are not captured in the model.

Learn more about estimate regression here,

https://brainly.com/question/22679496

#SPJ1

please help me with my math on my profile it's due in 2hrs

Answers

With only two hours left, it's important to stay focused and work efficiently. Take breaks as needed to avoid burnout, but don't procrastinate or get distracted by other tasks.

Hi there! I'd be happy to help you with your math on your profile. Could you please provide me with more specific information about the assignment? What topics does it cover and what kind of problems do you need help with? It's difficult to provide a comprehensive answer without more information.

In the meantime, I can offer some general tips for tackling math problems. First, read the problem carefully and make sure you understand what it's asking. Look for key words or phrases that indicate what type of problem it is. Next, identify the relevant formulas or concepts that you'll need to solve the problem. If you're unsure, check your textbook or notes for guidance.

As you work through the problem, be sure to show your work and label each step clearly. This will help you avoid mistakes and make it easier to check your work later. If you get stuck, don't be afraid to ask for help from a teacher or tutor.
Good luck, and let me know if you have any more specific questions or concerns!

To learn more about : hours

https://brainly.com/question/29149840

#SPJ11

the predicted temperature for the next 10 days in fahrenheit is the following: 71, 75, 74, 80, 83, 86, 90, 85, 81, 80 what is the mean temperature in fahrenheit? do not round your answer.

Answers

mean temperature=sum of all the temperatures to the total number of temperatures:

Mean temperature = (71 + 75 + 74 + 80 + 83 + 86 + 90 + 85 + 81 + 80) / 10

Mean temperature = 805 / 10

Mean temperature = 80.5°F

Therefore, the mean temperature for the next 10 days is 80.5 degrees Fahrenheit.

The mean temperature in Fahrenheit for the next 10 days is 79.5.

The mean temperature in Fahrenheit for the next 10 days can be calculated as follows;

Add all the given temperatures together:

71 + 75 + 74 + 80 + 83 + 86 + 90 + 85 + 81 + 80 = 795

Divide the sum obtained by the total number of temperatures, which is 10: 795 ÷ 10 = 79.5.

Therefore, the mean temperature in Fahrenheit for the next 10 days is 79.5.

To know more about temperature visit:

https://brainly.com/question/11464844?

#SPJ11

Please help me with this I am no good thank you so much

Answers

Answer:

its b

Step-by-step exiplanation:

Find the inverse function of y = 3x

Answers

Answer:

Step-by-step explanation:

To find the inverse of the function y = 3x, we need to swap the positions of x and y and then solve for y.

Step 1: Swap the positions of x and y

x = 3y

Step 2: Solve for y

Divide both sides by 3

x/3 = y

So the inverse function of y = 3x is x/3.

We can also verify that this is the inverse function by plugging in x/3 for y in the original equation and confirming that we get x:

y = 3x

x/3 = 3x/3

x/3 = x

Therefore, the inverse function of y = 3x is x/3.

Answer:

Step-by-step explanation:

The given function is y = 3x.

To find its inverse, we start by swapping x and y in the equation to get:

x = 3y

Next, we solve this equation for y to isolate it:

y = x/3

Therefore, the inverse of y = 3x is y = x/3.

at a sand and gravel plant, sand is falling off a conveyor and onto a conical pile at a rate of 14 cubic feet per minute. the diameter of the base of the cone is approximately three times the altitude. at what rate (in ft/min) is the height of the pile changing when the pile is 12 feet high? (hint: the formula for the volume of a cone is v

Answers

The height of the pile is increasing at a rate of approximately 0.056 feet per minute when the pile is 12 feet high.

We are given that sand is falling off at a rate of 14 cubic feet per minute, and the diameter of the base of the cone is approximately three times the altitude. Let h be the height of the pile at a given time t, then we can write the volume of the cone as V = (1/3)πr^2h, where r is the radius of the base of the cone. Since the diameter is three times the altitude, we have r = 3h/2.

Taking the derivative of the volume with respect to time, we get dV/dt = (1/3)π(9h^2/4)(dh/dt). Plugging in the given values, we get:

14 = (1/3)π(9h^2/4)(dh/dt)

Simplifying, we get:

dh/dt = 56/(3πh^2)

When the height of the pile is 12 feet, the rate of change of the height of the pile is:

dh/dt = 56/(3π(12)^2) ≈ 0.056 ft/min.

Therefore, the height of the pile is changing at a rate of approximately 0.056 ft/min when the pile is 12 feet high.

To know more about height of the pile changing:

https://brainly.com/question/28944246

#SPJ4

a random sample of 100 people was taken. eighty-five of the people in the sample favored candidate a. we are interested in determining whether or not the proportion of the population in favor of candidate a is significantly more than 80%. the p-value is group of answer choices 0.2112 0.05 0.1056 0.025

Answers

a) The null and alternative hypothesis are defined as

[tex]H_0 : p = 0.80 [/tex]

[tex]H_a : p > 0.80[/tex]

So, right choice is option (iii) here.

b) The test statistic value is equals to the 1.25.

c) The p-value of distribution is equals to the 0.1056. So, option(b) is right one here.

d) Conclusion: a fail to reject the null hypothesis, that is p = 0.80. So, there is no evidence to support the claim.

The claim about the population proportion that the proportion is more than 80% is tested under the null and the alternative hypothesis at the 5% level of significance. To calculate the P-value and the test statistic value, we will use Z-test. . We have a random sample of 100 people. So, sample size, n = 100

Number of people who favored candidate from the sample = 85

level of significance, [tex] \alpha[/tex]

= 0.05

Population proportion, [tex] \hat p[/tex]

= 85% = 0.85

a) The null hypothesis is,

[tex]H_0 : p = 0.80[/tex]

The alternative hypothesis is,

[tex]H_a : p>0.80[/tex]

(Right-Tailed)

Therefore, Option (iii) is correct.

b)Now, we determine the z statistic value : z-test statistic is defiend as:

[tex]z= \frac{\hat p−p}{\sqrt{\frac{p(1−p)}{n}}}[/tex]

=> [tex]z = \frac{0.85 - 0.80}{\sqrt{\frac{0.80(1 - 0.80)}{100}}}[/tex]

=> z = 0.05/0.04 = 1.25

so, Z-statistic value is 1.25.

c) Using the Z-distribution table, the value of P( z = 1.25 ) is 0.1056.

d) As we see, p-value (0.1056) > 0.05, so we fail to reject the null hypothesis. There is no evidence to reject null hypothesis.

For more information about null hypothesis, visit :

https://brainly.com/question/15980493

#SPJ4

Complete question:

a random sample of 100 people was taken. eighty-five of the people in the sample favored candidate a. we are interested in determining whether or not the proportion of the population in favor of candidate a is significantly more than 80%.

a) The correct set of hypothesis for this problem is I)H0:p=0.85 and

HA:p>0.85

ii. H0:p>0.80 and

HA:p=0.80

iii.) H0:p=0.80 and

HA:p>0.80

iv.) H0:p=0.80 and HA:p≥0.80

b) find out the Z-statistic value?

c)the p-value is ? group of answer choices 0.2112 0.05 0.1056 0.025

d) What is your conclusion?

The perimeter of a rectangular jewelry store is 186 feet. The store is 60 feet long. How wide is it?

Answers

Answer:

The width of the jewelry store is 33 feet.

Step-by-step explanation:

To solve the problem, we can use the formula for the perimeter of a rectangle, which is P = 2L + 2W where P is the perimeter, L is the length, and W is the width. Substituting the given values, we get 186 = 2(60) + 2W. Simplifying the right side, we get 186 = 120 + 2W. Subtracting 120 from both sides, we get 66 = 2W. Dividing both sides by 2, we get W = 33.

Therefore, the width of the jewelry store is 33 feet.

The probability that Isabella wins a
certain game of chance is 3/10 th
Isabella plays the game 150 times, how
many times can she expect to win the
game?

Answers

Answer:

45 times

Step-by-step explanation:

I hope this helps

I NEED HELP ON THIS ASAP!!!

Answers

The perimeter of the triangle is 28.08 units, the area of the triangle is 8.49 square units, and the height of the triangle is 3.18 units.

How are area and perimeter of a triangle calculated?

The lengths of the triangle's sides must be determined using the distance formula in order to determine the triangle's perimeter:

Side X to Y length: [tex]\sqrt{(5-2)2 + (9-10)2}[/tex]]d(XY) equals sqrt[9+1] = sqrt (10)

Side Y to Z length: [tex]d(YZ) = \sqrt{[(1-9)2 + (6-5)2]} = \sqrt{65}[/tex]

Side Z to X length: [tex]\sqrt{(2-6)2 + (10-1)2]} = d(ZX) = \sqrt{16+81]} = \sqrt{97}[/tex]

Perimeter: (XY + YZ + d) (ZX)

Sqrt(10) + Sqrt(65) + Sqrt Equals the circumference (97)

Radius = 10.17 + 8.06 + 9.85

Diameter: 28.08

We can apply the following formula to determine the triangle's area:

(1/2) * Base * Height = Area

Every triangle side's length serves as the base. Using side YZ

sqrt = base (65)

We must drop a perpendicular from vertex X to side YZ in order to get the height. The height of the triangle equals the length of this perpendicular.

y - 9 = (1/5) is the equation of the line connecting points Y and Z. (x - 6)

y - 10 = (-5) is the equation for the line that is perpendicular to this line and passes through point X. (x - 2)

We may get the location of the perpendicular's intersection with side YZ by solving these two equations:

x = 3.08, y = 6.47

Hence, the distance between points X and the point of intersection on side YZ is the triangle's height:

height is equal to sqrt[(3.08-2)2 + (6.47-9)2] = sqrt[10.11] = 3.18.

Area = (1/2)*base*height*sqrt(65)*3.18 Area = (1/2)*base*height*area Area = 8.49

Learn more about triangles here:

brainly.com/question/2773823

#SPJ1

what is the area, in square feet, of the rectangle shown 6 4/5 4 3/4 below?

Answers

The area of the given rectangle is [tex]32\dfrac{6}{20}[/tex] square feet

For better understanding check the calculation here.

Calculation:

Area of the rectangle is the space inside the given triangle.

Formula: Formula to find the area of the triangle is length times width

Length and width are given as mixed fractions

Lets convert mixed fractions into improper fractions

[tex]\text{Length}=6\dfrac{4}{5} =\dfrac{6\times5+4}{5} =\dfrac{34}{5}[/tex]

[tex]\text{Width}=4\dfrac{3}{4} =\dfrac{4\times4+3}{4} =\dfrac{19}{4}[/tex]

Now we find out the area

[tex]\text{Area}=\text{length}\times\text{width}[/tex]

[tex]\text{Area}=\dfrac{34}{5} \times\dfrac{19}{4}[/tex]

[tex]\text{Area}=\dfrac{646}{20}[/tex]

Now we divide the number and find out the quotient and remainder

[tex]\text{Area}=\dfrac{646}{4}[/tex]

[tex]\text{Quotient}=32[/tex]

[tex]\text{Remainder}=6[/tex]

[tex]\text{Area}=32\dfrac{6}{20}[/tex]

The area of the given rectangle is [tex]32\dfrac{6}{20}[/tex] square feet

Learn more information about Area of rectangle here:

brainly.com/question/21029878

4. Mrs. Selcer transforms f(x) = x² to create
g(x) = 6x². John claims the graph of g(x) will
be narrower than f(x). Jane claims the graph
will be a vertical stretch. Which student is
correct? Explain your reasoning.

Answers

4. The transformation by Mrs. Selcer of the function f(x) = x² to create g(x) = 6·x², is a vertical stretch of the function f(x), therefore;

Jane is correct

What is the transformation of a function?

The transformation of a function is a function that results in a variation in the graph of the parent function.

The rules for the transformation of a function indicates that a transformation of a function f(x) to a·f(x), transform the coordinates of the points of f(x) as follows;

(x, y) → (x, a·y)

Therefore;

The transformation is a vertical stretch when a > 1

The transformation is a horizontal compression when a < 1

Since f(x) = x², and g(x) = 6·x², we get;

g(x) = 6·f(x)

Therefore, comparing, we get; a = 6 > 1, which indicates that the function is vertically stretched.

Therefore, Jane is correct.

Learn more on the transformation of functions here: https://brainly.com/question/29185109

#SPJ1

Which one is greater 45% or 40%

Answers

45% is greater than 40%

1 of 11 of 1 Items
01:03
Question
Jordan received $100 for a graduation present and deposited it in a savings account. Each week thereafter, he added $15 to the account but no interest was earned. Which equation represents the relationship between w, the number of weeks Jordan kept his money in the account, and t, the total amount in the savings account?

Answers

f(w) = 100 + 15t is the function that represents the relationship between w, the number of weeks Jordan kept his money in the account, and t, the total amount in the savings account

It is given to us that Jordan received $100 for a graduation present and deposited it in a savings account. Each week thereafter, he added $15 to the account but no interest was earned.

We need to write an equation represents the relationship between w, the number of weeks Jordan kept his money in the account, and t, the total amount in the savings account:

Graduation present = $100

Amount deposited per week = $15

Let, w be the number of weeks, and t, the total amount in the savings account, therefore, the function is:

f(w) = 100 + 15t

Therefore, f(w) = 100 + 15t represents the relationship between w, the number of weeks Jordan kept his money in the account, and t, the total amount in the savings account

To learn more about functions, click here:

brainly.com/question/12431044

#SPJ4

Find the perimeter of a polygon. Assume that lines which appear to be tangent are tangent
A. 32.1
B. 39
C. 45.2
D. 59.7

Answers

Answer:

(C). 45.2

Step-by-step explanation:

1/3x = 1/7x+9 find x

Answers

Answer:

x = 189/4

Step-by-step explanation:

1 / 3x = 1/7x + 9

x / 3 = x / 7 + 9

4x / 21  = 9

x = 189/4

Which is equal to a temperature of 20°c? a 20°f b. 68°f c. 36°f d. 32°f

Answers

Answer:

B

Step-by-step explanation:

which of the following statements is false? a the power of a hypothesis test is a measure of the ability of the test to detect a difference between the estimated value and the true value of a parameter. b as the -level increases, the -level of a hypothesis test decreases. c is the measure of the probability of a type ii error. d the power of a hypothesis test increases as increases. e the power of a hypothesis test does not depend on the sample size.

Answers

The false statement among the options is E. The power of a hypothesis test does depend on the sample size.

The power of a hypothesis test is indeed a measure of the test's ability to detect a difference between the estimated value and the true value of a parameter (Statement A). It represents the probability of correctly rejecting the null hypothesis when it is actually false.

Statement B is true as well. As the alpha level increases, the beta level of a hypothesis test decreases. Alpha (α) represents the probability of a Type I error (rejecting the null hypothesis when it is true), while beta (β) represents the probability of a Type II error (failing to reject the null hypothesis when it is false). Statement C is accurate, as beta is the measure of the probability of a Type II error, meaning the likelihood of failing to reject a false null hypothesis. Statement D is also true. The power of a hypothesis test increases as alpha increases because increasing the alpha level means that you are more likely to reject the null hypothesis when it is false, which ultimately increases the power of the test.

However, statement E is false. The power of a hypothesis test does depend on the sample size. As the sample size increases, the power of the test increases as well. Larger sample sizes provide more accurate estimates of the population parameters, which helps in better differentiating between the null and alternative hypotheses, leading to a higher power for the hypothesis test. Therefore, the correct option is E.

The question was incomplete, Find the full content below:

which of the following statements is false?

A. the power of a hypothesis test is a measure of the ability of the test to detect a difference between the estimated value and the true value of a parameter.

B. as the alpha level increases, the beta level of a hypothesis test decreases.

C.Beta is the measure of the probability of a type ii error.

D. the power of a hypothesis test increases as alpha increases.

E. the power of a hypothesis test does not depend on the sample size.

Know more about Hypothesis test here:

https://brainly.com/question/29576929

#SPJ11

Find the length of the arc on a circle of radius r intercepted by a central angle . (Round your answer to two decimal places.)
Radius r Central Angle
14 inches 300°

Answers

Using the radians we know that the length of the arc in terms of π is s = 1.53 * π * 12 ft or s = 57.60 ft.

What is a circle?

All points in a plane that are at a specific distance from a specific point, the center, form a circle.

In other words, it is the curve that a moving point in a plane draws to keep its distance from a specific point constant.

So, the central angle of degrees must first be converted to radians.

θ(rad) = 275/180 * π = 1.53 rad

Then, by multiplying the Central angle (in rad units) by the circle radius r, the arc length may be determined:

s = θ * r

Changing the θ and r values:

s = 1.53 * π * 12 ft

s = 57.60 ft

Therefore, using the radians we know that the length of the arc in terms of π is s = 1.53 * π * 12 ft or s = 57.60 ft.

Know more about a circle here:

https://brainly.com/question/24375372

#SPJ1

Correct question:

Find the length of the arc, s, on a circle of radius r intercepted by a central angle θ. Express arc length in terms of π. Then round your answer to two decimal places.

Radius, r = 12 feet; Central angle, θ = 275

James and Kim are selling flower bulbs for a school fundraiser. Customers can buy packages of tulip bulbs and packages of crocus bulbs. James sold 3 packages of tulip bulbs and 7 packages of crocus bulbs for a total of $145. Kim sold 10 packages of tulip bulbs and 14 packages of crocus bulbs for a total of $334. Find the cost each of one package of tulips bulbs and one package of crocus bulbs.

Answers

The cost of one package of tulip bulbs is 11, and the cost of one package of crocus bulbs is 16.

To find the cost of one package of tulip bulbs and one package of crocus bulbs, follow these steps:

Write two equations based on the given information:

Equation 1 (James): 3T + 7C = 145

Equation 2 (Kim): 10T + 14C = 334

Solve the system of equations using the substitution or elimination method. In this case, we'll use the elimination

method by multiplying Equation 1 by 2 to make the coefficients of C the same:

Equation 1 modified: 6T + 14C = 290

Subtract Equation 2 from the modified Equation 1:

(6T + 14C) - (10T + 14C) = 290 - 334
  -4T = -44

Divide both sides by -4 to find the value of T (tulip bulbs):
  T = 11

Substitute the value of T back into Equation 1 to find the value of C (crocus bulbs):
  3(11) + 7C = 145
  33 + 7C = 145

Subtract 33 from both sides:
  7C = 112

Divide both sides by 7 to find the value of C:
  C = 16

So, the cost of one package of tulip bulbs is 11, and the cost of one package of crocus bulbs is 16.

for such more question on cost

https://brainly.com/question/25109150

#SPJ11

The table shows the balance of a money market account over time. Write a function that represents the balance y
(in dollars) after t years.

Year, t Balance
0 $200
1 $230
2 $264.50
3 $304.18
4 $349.80
5 $402.27





































The value of a boat is $23,400. It loses 8% of its value every year. Write a function that represents the value y
(in dollars) of the boat after t years.

Answers

Answer:

y = 200·1.15^t The required function is y=1.047t + 199.12

Step-by-step explanation:

The ratio from one year to the next is 1.15, so the balance is a geometric sequence. Since t starts at zero, we can write the balance (y) after t years as ...

 y = initial value · (common ratio)^t

 y = 200·1.15^tThe given table shows the balance of a money market account over time.

Time (t)     Balance(y)

0  200

1  210

2  220.5

3  231.53

4  243.1

5  255.26

The function that represents the balance y(in dollars) after t years is linear regression line, because the value of y increased linearly.

The linear regression function is defined as

Where,

Put the values from the below table in the above formulas.

The value of b is 11.047 and the value of a is 199.12. Here, the variable is t.

Therefore the required function is the anser up top

Part A
Does this curved line represent a function? If not, at what points does it fail the vertical line test?

Answers

It is a function because it passes the vertical line test, where every x-value has exactly one y-value.

Hilary has 45 inches of lace to decorate the circular bottom of a lampshade. What is the approximate diameter of the largest lampshade she can put lace around?

Answers

The largest lampshade Hillary can wrap laces around has an estimated diameter of [tex]14.32[/tex] inches.

What are radius and diameter?

The better measure across the edge of the circle is its diameter. The radius of a circle is the farthest from to any place on the edge. The diameter and radius are inversely proportional, or 2r=d2 r=d.

What is an illustration of diameter?

For instance, if a circle has a circumference of 25 cm, its diameter is 25 cm/, or 7.96 cm. For instance, calculate the square root of 12cm2 if that is the circle's area. Hence, the circle's diameter becomes 1.95 x 2 Equals 3.90 cm.

[tex]C = 2pir[/tex]

where [tex]C[/tex] is the circumference, π (pi) is a mathematical constant approximately equal to [tex]3.14[/tex], and r is the radius of the circle.

We can do this by rearranging the formula for the circumference:

[tex]C = 2pir[/tex]

[tex]r = C / (2pi)[/tex]

We are given that Hilary has [tex]45[/tex] inches of lace, which is the circumference of the circle.

[tex]r = 45 / (2pi) =7.16 inches[/tex]

Finally, we can find the diameter of the circle by doubling the radius:

[tex]d = 2r = 14.32 inches[/tex]

Therefore, the approximate diameter of the largest lampshade Hilary can put lace around is [tex]14.32[/tex] inches.

To know more about diameter visit:

https://brainly.com/question/1144131

#SPJ1

Work out 9 sin 60°- 5/√3 Give you answer in the form a/b√3 where a and b are integers b​

Answers

Answer:

  17/6√3

Step-by-step explanation:

You want the simplified form of 9·sin(60°) -5/√3.

Simplify

  [tex]9\sin(60^\circ)-\dfrac{5}{\sqrt{3}}=9\cdot\dfrac{\sqrt{3}}{2}-\dfrac{5\sqrt{3}}{\sqrt{3}\cdot\sqrt{3}}= \dfrac{3\cdot9\sqrt{3}}{3\cdot2}-\dfrac{2\cdot5\sqrt{3}}{2\cdot3}\\\\=\dfrac{(27-10)\sqrt{3}}{6}=\boxed{\dfrac{17}{6}\sqrt{3}}[/tex]

SOMEONE PLEASEEEE HELP MEEEEEEE ASAPPPP

Answers

The answer is transitive

a fair coin is tossed until either a head comes up or four tails are obtained. what is the expected number of tosses?

Answers

The expected number of tosses until either a head comes up or four tails are obtained is 7/4

Let X be the random variable representing the number of tosses until either a head comes up or four tails are obtained.

Let's consider the first toss. There are two possible outcomes: heads or tails. If a head comes up on the first toss, then we stop and X = 1. If a tail comes up, we need to continue tossing until we get four tails in a row or a head.

Let Y be the random variable representing the number of additional tosses needed if the first toss is a tail. There are two possible outcomes for the second toss: heads or tails. If a head comes up, we stop and X = 2. If a tail comes up, we need to continue tossing until we get three tails in a row or a head.

Similarly, we can define Z as the random variable representing the number of additional tosses needed if the first two tosses are tails. There are two possible outcomes for the third toss: heads or tails. If a head comes up, we stop and X = 3. If a tail comes up, we need to continue tossing until we get two tails in a row or a head.

Finally, let W be the random variable representing the number of additional tosses needed if the first three tosses are tails. There are two possible outcomes for the fourth toss: heads or tails. If a head comes up, we stop and X = 4. If a tail comes up, we need to continue tossing until we get four tails in a row.

We can write X in terms of Y, Z, and W as follows

X = 1 + Y if the first toss is heads

X = 1 + 1 + Z if the first two tosses are tails and the third toss is heads

X = 1 + 1 + 1 + W if the first three tosses are tails and the fourth toss is heads

X = 1 + 1 + 1 + 1 if the first four tosses are tails

Now, we need to compute the expected values of Y, Z, and W.

If the first toss is a tail, the probability of getting another tail on the second toss is 1/2, and the probability of getting a head is also 1/2. Therefore,

E[Y] = 1/2(1) + 1/2(1 + Z)

If the first two tosses are tails, the probability of getting another tail on the third toss is 1/2, and the probability of getting a head is also 1/2. Therefore,

E[Z] = 1/2(1) + 1/2(1 + W)

If the first three tosses are tails, the probability of getting another tail on the fourth toss is 1/2, and the probability of getting a head is also 1/2. Therefore,

E[W] = 1/2(1) + 1/2(4)

Note that the expected value of W is 2, not 3, because if we get three tails in a row, we stop and X = 4.

Putting it all together, we have:

E[X] = 1/2(1) + 1/2(1 + E[Z])

= 1/2(1) + 1/2(1 + 1/2(1) + 1/2(1 + E[W]))

= 1/2(1) + 1/2(1 + 1/2(1) + 1/2(1 + 2))

= 7/4

Learn more about probability here

brainly.com/question/30456668

#SPJ4

f(x)=2x^3+x^2+3 then what is the remainder when f(x) is divided by x-1

Answers

Answer:  F(1) = 2. (1)^3 + (1)^2 + 3

                      = 2+1+3

                      = 7

Step-by-step explanation:

Answer:

The remainder when f(x) is divided by x - 1 is 6.

Step-by-step Explanation:

To find the remainder when f(x) is divided by x - 1, we can use the remainder theorem, which states that the remainder of f(x) when divided by x - a is equal to f(a).

So, in this case, we need to evaluate f(1) to find the remainder when f(x) is divided by x - 1:

f(1) = 2(1)^3 + (1)^2 + 3
= 2 + 1 + 3
= 6

Therefore, the remainder when f(x) is divided by x - 1 is 6.

Some help on this please

Answers

Answer:

3.375 hope this helps

Answer:

[tex]\dfrac{27}{8}[/tex]

Step-by-step explanation:

we have to find,

[tex]x = \left( -\dfrac{1}{4} -\dfrac{1}{2}\right) \div \left( - \dfrac{2}{9} \right)[/tex]

simplifying,

[tex]x = \left( -\dfrac{1}{4} -\dfrac{2}{4}\right) \div \left( - \dfrac{2}{9} \right)[/tex] (changed the base)

[tex]x = \left( -\dfrac{3}{4}\right) \div \left( - \dfrac{2}{9} \right)[/tex]

therefore,

[tex]x =\dfrac{27}{8}[/tex] (canceled negative sign and used division rule for fractions)

Hopefully this answer helped you!

Other Questions
consider this array declaration: int x[1024][128]; suppose that after compilation, the base address of x is 0x0e000000. how much memory (in bytes) does each row of the nested array x occupy? That was wrong the answer was: Advertisers may draw on fear or the desire to impress others to sell products. I took the K12 test. a nurse is preparing to administer ceftazidime 1 g by intermittent IV bolus every 12 hr. Available is ceftazidime injection 1 g in 0.9% sodium chloride in a large corporation with n salespeople, every 10 salespeople report to a local manager, every 10 local managers report to a district manager, and so forth until finally 10 vice presidents report to the firm's president. if the firm has n salespeople, where n is a power of 10, find and solve recurrence relations for: a) the number of different managerial levels in the firm b) the number of managers (up through president) in the firm what role did clothing play during the 1950s civil rights movement? be specific. demonstrate that you have studied the material in the unit. a helicopter, starting from rest, accelerates straight up from the roof of a hospital. the lifting force does work in raising the helicopter. an 840-kg helicopter rises from rest to a speed of 9.5 m/s in a time of 4.0 s. during this time it climbs to a height of 7.7 m. what is the average power generated by the lifting force? knightmare, incorporated, will pay a dividend of $5.25, $9.35, and $12.55 per share for each of the next three years, respectively. the company will then close its doors. investors require a return of 11.5 percent on the company's stock. what is the current stock price? multiple choice why did iron become central to the success of the british economy in the nineteenth century? a machine cuts corks intended for use in wine bottles. it produces corks with diameters that are normal with mean 3.01cm and standard deviation 0.08cm. acceptable corks have diameters between 2.95cm and 3.05cm. a) what % of the corks produced by the machine is acceptable? enter numerical answer b) 80% of all corks produced by the machine have diameters less than: enter numerical answer Identify the types of adverbs underline in the following sentence1.susan will wash her clothes tomorrow all of the following provisions in an individual health insurance policy are optional except a)proof of loss b)unpaid premium c)misstatement of age d)change of occupation what is a roller support puis je avoir les parties et sous partie de Gervaise avec coupeau, la societe etc dans lassommoir de victor hugomerci beaucoup cela m'aiderai beaucoup a nurse in a pediatrician's office is assessing a 4-year-old child. what assessment techniques will the nurse use with a preschool-age child? The White House spokesman said that if the relevant bill was sent to the desk, US President Biden would sign to end the national emergency of COVID-19 in advance, although he strongly opposed it. The US Senate will vote on the evening of the 29th local time and is expected to pass a smartphone was purposefully dropped from a height of 10 meters to test its durability from external physical impact. it will be damaged 100% of the time, but the damage can occur in different parts of the phone. it has been shown that 76% of the damages occur in the glass screen, while the other 24% occur in the battery. a number of smartphones were tested and the tests were independent. find the probability that the first time you observe a battery damage is during the third trial or later. Adrian's recipe for raisin muffins calls for 1 and 3/4 cups raisins for one bunch of muffins. Adrian wants to make two and one half batches of muffins for a bake sale. How many cups of raisins will Adrian use? how does the ending of don quixote force the reader to understand the meaning and larger themes of the story 7. Michelangelo paints 7/8 of a wall in 1 hour. What part of a wall does Michelangelo paint in 1minute? i need someone to write a code to ask a person his name and age then say hi and his name and age so in the ned there is (hi alex your age is 15) for examplealso don't forget to take a screenshot of the code