ANSWER THE QUESTION FOR BRAINLIEST

Answer:

The 80% confidence interval for the mean repair cost for the washers is between $34.60 and $70.66.

Step-by-step explanation:

We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 4 - 1 = 3

80% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 3 degrees of freedom(y-axis) and a confidence level of [tex]1 - \frac{1 - 0.8}{2} = 0.9[/tex]. So we have T = 1.638

The margin of error is:

[tex]M = T\frac{s}{\sqrt{n}} = 1.638\frac{22.01}{\sqrt{4}} = 18.03[/tex]

In which s is the standard deviation of the sample and n is the size of the sample.

The lower end of the interval is the sample mean subtracted by M. So it is 52.63 - 18.03 = $34.60

The upper end of the interval is the sample mean added to M. So it is 52.63 + 18.03 = $70.66.

The 80% confidence interval for the mean repair cost for the washers is between $34.60 and $70.66.

Answer:

[tex]x - 8 + 4x - 7 = 180 \\ \\ 5x - 15 = 180 \\ \\ 5x = 180 + 15 \\ \\ 5x = 195 \\ \\ x = 195 \div 5 \\ \\ x = 39 \\ [/tex]

Answer: Yes, because there are at least two claims

Step-by-step explanation:

Ur welcome 3>

Answer:true

Step-by-step explanation:        

Answer:

61°

Step-by-step explanation:

180° - 119° = 61°

Answer:

I love algebra anyways  

the ans is in the picture with the steps  

(hope it helps can i plz have brainlist :D hehe)

Step-by-step explanation:

Answer:

it is 2

Step-by-step explanation:

pls make me blanliest

Answer:

D. 116

Step-by-step explanation:

Let the grasshoppers with a white marking be 2x.

Let the grasshoppers without a white marking be 3x.

2x + 3x = 290

5x = 290

x = 290 / 5

x = 58

The grasshoppers with a white marking

= 2x

= 2 ( 58 )

= 116

Answer:

1.        42

2.       46

3.      0

Step-by-step explanation:

math

Answer:

1. x = 42

2. y = 46

3. z = 0

Step-by-step explanation:

1. 45 + x = 87

         subtract 45 from both sides

  x = 42

2. y - 31 = 15

         add 31 to both sides

  y = 46

3. 5z = 0

         divide 5 from both sides

  z = 0/5

         since any fraction with a numerator of 0 is equal to 0, we get

  z = 0

Answer:

no one here speaks spanish-

Step-by-step explanation:

Answer:

C- 4/5 cups

Step-by-step explanation:

Answer: 1/3.(√3/4)×40×40 ×5√(5

Step-by-step explanation:

Answer:

200 m^3

Step-by-step explanation:

1) find the side of the base

side = 40 : 4 = 10 m

2) find the base area

base area = side^2 = 10^2 = 100 m^2

3) find the Volume

V = (base area x height)/3 = (100 x 6)/3 = 200m^3

Answer:

5/7

Step-by-step explanation:

Reason why is because when you're dividing, the second number gets flipped around.  For example, the 7 becomes 1/7 and instead of dividing, it becomes 5x1/7, which equals 5/7! Hope this helps

Answer:

x²

Step-by-step explanation:

just check this 2x²+3x-5=0

Answer:

C

Step-by-step explanation:

To evaluate f(- 3) substitute x = - 3 into f(x) , that is

f(- 3) = (- 3)² - 5(- 3) + 1 = 9 + 15 + 1 = 25

Answer: 1/35

Step-by-step explanation:

I just did the assignment on ck-12 and got it right.

The probability of removing 4 marbles without replacing and getting exactly 3 blue is 1/35.

Probability refers to a possibility that deals with the occurrence of random events. The probability of all the events occurring need to be 1.

The formula of probability is defined as the ratio of a number of favorable outcomes to the total number of outcomes.

A bag contains 10 colored marbles - 4 red, 4 blue, and 2 green.

The probability of removing 4 marbles without replacing and getting exactly 3 blue.

= 1/35

Learn more about probability here;

https://brainly.com/question/11234923

#SPJ2

Answer: the answer will be -15.5, but this number is not in the choices given, so I guess you made a mistake while writing the equation

Step-by-step explanation:

6q+8=-9-76

6q+8=-85               Subtract 8 from both sides

6q=-93                   Divide both sides by 6

q=-15.5

Answer: 7 cubic meters

Step-by-step explanation:

you add

Answer:

2 times, so it would be 2 2/3

Step-by-step explanation:

Hope this helped! Have an Amazing Day! Or Night!! :)

9514 1404 393

Answer:

  1/8

Step-by-step explanation:

To find out, divide 1/3 by 8/3.

  (1/3)/(8/3) = 1/8

8/3 goes into 1/3 exactly 1/8 times.

__

There are (at least) two ways to divide fractions.

1. "invert and multiply" (A.K.A. "swap dot")

  [tex]\dfrac{1}{3}\div\dfrac{8}{3}=\dfrac{1}{3}\cdot\dfrac{3}{8}=\dfrac{1\cdot3}{3\cdot8}=\boxed{\dfrac{1}{8}}[/tex]

__

2. Drop common denominators.

  [tex]\dfrac{1}{3}\div\dfrac{8}{3}=1\div8=\boxed{\dfrac{1}{8}}[/tex]

she can buy 5 shirts

Answer:

24 mouths have passed

Step-by-step explanation:

Answer:

I think that that angle would also be 102 degrees.