Homework:Homework Week Two Module - Chapter 7 - Sections 7.

Question 10, 7.5.32-T

Part 2 of 4

HW Score: 5%, 0.5 of 10 points

Points: 0 of 1

Save

Question content area top

Part 1

You can calculate the P-value for a chi-square test using technology. After calculating the standardized test statistic, use the cumulative distribution function (CDF) to calculate the area under the curve. Use the P-value method to test the claim.

A school administrator claims that the standard deviation for eighth-grade students on a test is greater than

40

points. A random sample of

27

eighth-grade students has a standard deviation of

41.2

points. At

=0.10,

is there enough evidence to support the administrator's claim?

Question content area bottom

Part 1

Identify the null and alternative hypotheses.

A.

H0:

<40

Ha:

40

B.

H0:

>40

Ha:

40

C.

H0:

40

Ha:

<40

D.

H0:

40

Ha:

>40

Your answer is correct.

Part 2

Identify the standardized test statistic.

2=enter your response here

(Round to three decimal places as needed.)