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3 years ago

Female athletes receive 25

Mathematics

1 answer:

Vaselesa [24]3 years ago

6 0

Okay and? what’s next

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A taxi charges $4 plus $.25 per km

drek231 [11]

It will cost

23.58

to travel

8.7

miles.

8 0

3 years ago

It is known that the population variance equals 484. With a .95 probability, the sample size that needs to be taken to estimate

Hitman42 [59]

Answer:

The minimum sample size is n = 75 so that the desired margin of error is 5 or less.

Step-by-step explanation:

We are given the following in the question:

Population variance = 484

Standard deviation =

$\sigma^2 = 484\\\sigma =\sqrt{484} = 22$

Confidence level = 0.95

Significance level = 0.05

Margin of error = 5

Formula:

Margin of error =

$E = z\times \dfrac{\sigma}{\sqrt{n}}\\\\n = (\dfrac{z\times \sigma}{E})^2$

$z_{critical}\text{ at}~\alpha_{0.05} = 1.96$

Putting values, we get

$E\leq 5\\\\1.96\times \dfrac{22}{\sqrt{n}} \leq 5\\\\\sqrt{n} \geq 1.96\times \dfrac{22}{5}\\\\n \geq (1.96\times \dfrac{22}{5})^2\\\\n \geq 74.373$

Thus, the minimum sample size is n = 75 so that the desired margin of error is 5 or less.

3 0

2 years ago

Help plzzzzz I’ll make you brainlest :)))))))

scZoUnD [109]

Answer:

first one my dear friend!

Step-by-step explanation:

can I get brainliest?? ;P

6 0

3 years ago

Read 2 more answers

A plumber had a pipe that was 2 yards long he cut 18 inches off the end of the pipe

balandron [24]

To convert yards to feet, you would multiply it by 3. So, since there the pipe is 2 yards long, you could multiply 2*3 to get 6 feet. Then you can convert feet to inches by multiplying it by 12. 6*12 is equal to 72, so 2 yards is equal to 72 inches. Lastly, you can subtract 18 from 72, to get 54, and 54 inches would be your final answer.

7 0

2 years ago

Based on the information below what are the values of x and y of the solution to the system of equations used to create the info

Grace [21]

Answer:

(D). x = 2 , y = - 5

Step-by-step explanation:

A = - 8 + 48 = 40

$A_{x}$ = -76 + 156 = 80