A personnel director in a particular state claims that the mean annual income is greater in one of the? state's counties? (county A) than it is in another county? (county B). In County? A, a random sample of 13 residents has a mean annual income of $40,100 and a standard deviation of $8100. In County? B, a random sample of 11 residents has a mean annual income of $38,500 and a standard deviation of $5700. Ar ?= 0.025,answer parts? (a) through? (e). Assume the population variances are not equal. If convenient, use technology to solve the problem.a. Which is the correct claim below? A. "The mean annual income in county A is greater than in county B." B. "The mean annual incomes in counties A and B are equal." C. "The mean annual income in county A is less than in county B." D. "The mean annual incomes in counties A and B are not equal" B. What are H0 and Ha? The Null Hypoythesis, H0, is _____. The Alternative hypothese, Ha is ________ (b) Find the critical value(s) and identify the rejection region(s). Enter the critical value(s) below. Select the correct rejection region(s) below. C. Find the standardized test statistic. t= D. Decide whether to reject or fail to reject the null hypothesis. E. Interpret the decision in the context of the original claim. At the ____ significance level, there ______ enough evidence to support the personnel director's claim.

A personnel director in a particular state claims that the mean annual income is greater in one of the? state's counties? (county A) than it is in another county? (county B). In County? A, a random...

A personnel director in a particular state claims that the mean annual income is greater in one of the? state's counties? (county A) than it is in another county? (county B). In County? A, a random sample of 13 residents has a mean annual income of $40,100 and a standard deviation of $8100. In County? B, a random sample of 11 residents has a mean annual income of $38,500 and a standard deviation of $5700. Ar ?= 0.025,

answer parts? (a) through? (e). Assume the population variances are not equal. If convenient, use technology to solve the problem.

a. Which is the correct claim below?

"The mean annual income in county A is greater than in county B."

"The mean annual incomes in counties A and B are equal."

"The mean annual income in county A is less than in county B."

"The mean annual incomes in counties A and B are not equal"

What are H0 and Ha?

The Null Hypoythesis, H0, is _____. The Alternative hypothese, Ha is ________

(b) Find the critical value(s) and identify the rejection region(s).

Enter the critical value(s) below.

Select the correct rejection region(s) below.

Find the standardized test statistic.

D. Decide whether to reject or fail to reject the null hypothesis.

E. Interpret the decision in the context of the original claim.

At the ____ significance level, there ______ enough evidence to support the personnel director's claim.

Jun 08, 2022

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A personnel director in a particular state claims that the mean annual income is greater in one of the? state's counties? (county A) than it is in another county? (county B). In County? A, a random...

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