If you know the right answer then help me solve this.​

Using the z-distribution, it is found that the 90% confidence interval is given by: (0.6350, 0.6984).

A confidence interval of proportions is given by:

[tex]\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]

In which:

In this problem, we have a 90% confidence level, hence[tex]\alpha = 0.9[/tex], z is the value of Z that has a p-value of [tex]\frac{1+0.9}{2} = 0.95[/tex], so the critical value is z = 1.645.

The sample size and the estimate are given by:

[tex]n = 600, \pi = \frac{400}{600} = 0.6667[/tex]

Hence, the bounds of the interval are given by:

[tex]\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.6667 - 1.645\sqrt{\frac{0.6667(0.3333)}{600}} = 0.6350[/tex]

[tex]\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.6667 + 1.645\sqrt{\frac{0.6667(0.3333)}{600}} = 0.6984[/tex]

The 90% confidence interval is given by: (0.6350, 0.6984).

More can be learned about the z-distribution at https://brainly.com/question/25890103

#SPJ1

Answer:

The Snack Shop

Step-by-step explanation:

The equation given, y=1.25x means this store sells a bar of granola for $1.25.

The other store sells their granola bar for $1.30.

1.25 is less than 1.30.

Hence, the snack shop sells their granola bars for a lower price.

Assuming she went to the theater no more than 8 times. The inequality best represents the number of movies she saw is: x + y ≤ 8.

The inequality that represent the number of movies is: x + y ≤ 8

Where:

x represent drama at the movie theater

y represnt comedies at the movie theater

≤ represent less than

8=Number of times

Therefore the inequality is: x + y ≤ 8.

Learn more about inequality here:https://brainly.com/question/24372553

Answer:

c on edge

Step-by-step explanation:

because i took the test and got a 100

Answer: Kyle has 39 and Josh has 31

Step-by-step explanation:

you do 70-8 which equals 62 then divide by 2 which is 31. But Kyle has 8 more so add 31+8 so Josh has 31 and Kyle has 39

Hillsdale Orchard's owners decide to plant 30 new Gala apple trees, he needs to pllat 40 new fuji trees so as to maintain the same ratio of Fuji apple trees to Gala apple trees.

An equation is an expression that shows the relationship between two or more numbers and variables.

From the table:

Ratio of Fuji apple trees to Gala apple trees = 160 / 120 = 4/3

Hence, for 30 new galla trees, number of Fuji trees is:

Fuji trees = (4/3) * 30 = 40

Hillsdale Orchard's owners decide to plant 30 new Gala apple trees, he needs to pllat 40 new fuji trees so as to maintain the same ratio of Fuji apple trees to Gala apple trees.

Find out more on equation at: https://brainly.com/question/1214333

Answer:

the answers are 0.2, 12/50, -40, -6.44

Answer:

40 degrees

Step-by-step explanation:

if the lines are perpendicular, then they are also sharing the same line so that means, its a simple equation of 180-140=40.

Answer:

The value of angle 2 = 40°

Step-by-step explanation:

Given : angle 1 = 140°

angle 1 + angle 2 = 180° { because they are linear pair }

=> 140 + angle 2 = 180°

=> angle 2 = 180 - 140

=> angle 2 = 40°

Answer:

46%

Step-by-step explanation:

184/400=vanilla

184/400=46/100=46%

hope this helps

Answer:

DeShawn can buy 5 packages of tomatoes.

Step-by-step explanation:

If Ashley got one for $3, that means DeShawn can five for $15.

15÷3=5

So

$15÷$3=5 packages of tomatoes.

I tried to explain everything. I've bolded the main points. Hope this helps! Good luck!

Probability of picking red = number of red / total marbles.

probability = 3/13

Answer:

Yes there is a bias, they are only samplying from one resturant. This resturant could be any type of resturant. the food could be bad or good which wouldnt give us the right info we are looking for. You would want to interview as many customers from as many different resturants in that area.

Step-by-step explanation:

Answer:

6

Step-by-step explanation:

140+8X=50+23X

8X-23X=50-140

-15X=-90

X=-90/-15

X=6 TRIPS IS THE ANSWER.

PROOF:

140+8*6=50+23*6

140+48=50+138

188=188

Answer: A

Step-by-step explanation:

Answer:

12/13

Step-by-step explanation:

We know that cosine is the adjacent side divided by the hypotenuse in a right triangle.

The adjacent side to angle C is BC

The hypotenuse is AC because it is opposite to the right angle

So...

cosine is (BC)/(AC)

36/39

12/13

Answer:

1418 ( Hope this helps! )

Step-by-step explanation:

g= 440+990-2(440)(990) cos 164

g=193600+980100-2

g=193600+980100+837451.1895

g= 2011151.1895 Square root and round

Answer:

(3,-4)

Step-by-step explanation:

QI=(+,+)

QII=(-,+)

QIII=(-,-)

QIV=(+,-)

Answer:

(3,-4)

Step-by-step explanation:

you are roating the triangle down (across the y-axis) and then moving to the right (across the x-axis). I hope this helps!

Answer:

1

Step-by-step explanation:

Answer:

(1/8)x^2 +3

Step-by-step explanation:

in order to widen the quadratic functions you just need to make the coefficient of x^2 less than 1. and to shift the graph upwards you need to add a positive constant at the end like +2.

answer:

(1/8)x^2 +3

TO MAKE ANGLE THAT ARE NEEDED IN CONSTUCTION

Answer:

A ≈ 62.3 ft²

Step-by-step explanation:

the area (A) of the triangle is calculated as

A = [tex]\frac{1}{2}[/tex]  product of 2 sides × angle between them , that is

A = 0.5 × 18 × 11.5 × sin37°

   = 103.5 × sin37°

   ≈ 62.3 ft² ( to the nearest tenth )

Answer:

it’s D, I just

Took the quiz

Answer:

Correct answer is C.

Step-by-step explanation.

Answer:

Step-by-step explanation:

(x - 10)² is not an equation. It is in factorized form. If you do not mention the equals sign, then that is not an equation. But however, this factorized form can be converted to expanded form using  Algberaic formulae. The formulae are,

(a - b)² = a² - 2ab + b², (a + b)² = a² + 2ab + b²

According to the question,

a = x and b = 10

(x - 10)² = x² - 2 (x)(10) + 10²

             = x² - 20x + 100

x² - 20x + 100 is the expanded form of (x - 10)².

Answer:

6

Step-by-step explanation:

3 3/4  = 15 / 4     =   105 / 28

2 7/28 = 63/28

105/68  +  63/28   =   (105 + 63) / 28 = 168/28 = 6

[tex]3 \frac{3}{4 } + 2 \frac{7}{28} [/tex]

the simplest form.

[tex] \frac{15}{4} + \frac{9}{4} [/tex]

[tex] = \frac{(15 \times 4) + (9 \times 4)}{4 \times 4} [/tex]

[tex] = \frac{60 + 36}{16} [/tex]

[tex] = \frac{96}{16} [/tex]

[tex] = 6[/tex]

therefore the correct answer is option C.

3*2/3=2

Given :-

To find :-

Solution :-

formula for Surface Area = 2(LW + WH + HL)

Surface Area = 2(8×10 + 10×10 + 10×8) m²

Surface Area = 2(260) m²

Surface Area = 520m² ( Option C)

Answer:

B. 6 cm

Step-by-step explanation:

[tex]\text{Take the volume of a sphere and solve for r.}\\V=\frac{4}{3}\pi r^3\\\text{We already know that the volume is 113, so substitute that value.}\\113=\frac{4}{3}\pi r^3\\\text{Divide both sides by 4/3 pi.}\\\frac{113}{\frac{4}{3}\pi}=r^3\\\text{Divide 113 by 4/3 pi.}\\r^3=26.98\\\text{For a more accessible value, round up.}\\r^3 \approx27\\\text{Take the cube root of both sides.}\\r=3[/tex]

Now that the radius is known, all we have to do is multiply it by 2 to get the diameter. Here the answer is simply 3 * 2, or 6.

Answer:

B. 6 cm

Step-by-step explanation:

You can use the formulas [tex]d=(\frac{6V}{\pi } )^{\frac{1}{3} }[/tex] or [tex]d = \sqrt[3]{\frac{6V}{\pi } }[/tex] to solve for diameter using volume. I will use the first forumla for this problem.

1. Substitute 113 for "V":

[tex]d=(\frac{6(113)}{\pi }) ^{\frac{1}{3} }[/tex]

2. Multiply in the parenthesis:

[tex]d=(\frac{678}{\pi } )^{\frac{1}{3} }[/tex]

3. Divide by pi (3.14):

678 ÷ 3.14 = 215.923567

[tex]d=215.9^{\frac{1}{3} }[/tex]

4. Apply the exponent:

d = 5.99907...

d = 6 cm

hope this helps!