Wednesday

March 4, 2015

March 4, 2015

Posted by **kay** on Monday, September 2, 2013 at 1:49am.

1) State the correct null and alternative hypotheses that the school administrator wishes to test.

2) Calculate the test statistic that would be used for conducting the desired test.

3) Find the p-value of this test.

4) Assuming á = 0.01, what is your conclusion?

- university of phoenix -
**MathGuru**, Tuesday, September 3, 2013 at 7:14pmYou can try a proportional one-sample z-test for this one since this problem is using proportions.

Here's a few hints to get you started:

Null hypothesis:

Ho: p = .40 -->meaning: population proportion is equal to .40

Alternative hypothesis:

Ha: p > .40 -->meaning: population proportion is greater than .40 (this is a one-tailed test).

Using a formula for a proportional one-sample z-test with your data included, we have:

z = .46 - .40 -->test value (138/300 is .46) minus population value (.40) divided by

√[(.40)(.60)/300] --> .60 represents 1-.40 and 300 is sample size.

Finish the calculation. If you need to find the p-value for the test statistic, check a z-table. The p-value is the actual level of the test statistic. Compare that value to 0.01 to determine whether or not to reject the null. If you reject the null, you can conclude that p > .40.

I hope this will help.

**Answer this Question**

**Related Questions**

statistics - It has been reported that 26% of children in the U.S. live in homes...

college math - suppose that in a class of 50 students, 12 are married and 20 ...

english - "Why I refused." is a sentence while "How to make both ends meet." is ...

American History - Many historians have claimed that geography has been very ...

History - I live in The United Kingdom. And we do not do grades we do Year. I am...

Math - If the ratio of children to parents is 3 to 2 which of these shows ...

economics - What marginal costs does University of Phoenix incur in offering one...

English - We're studying subject after the verb. 1.(Has, Have) your neighbors ...

statistics - Please, give the formula and steps to do this problem. Thank you ...

business statistics - The average length of a flight by regional airlines in the...