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SAT scores : Scores on the math SAT are normally distributed. A sample of 28 SAT scores had standard deviation = s 87 .Someone says

SAT scores: Scores on the math SAT are normally distributed. A sample of

28

SAT scores had standard deviation

=s87

.Someone says that the scoring system for the SAT is designed so that the population standard deviation will be different than

=72

.Do these data provide sufficient evidence to contradict this claim? Use the

=0.10

level of significance.

Part:0 / 5

0 of 5 Parts Complete

Part 1 of 5

State the null and alternate hypotheses.

:H0

>

:H1

>

This hypothesis test is a right-tailed test.

Part:1 / 5

1 of 5 Parts Complete

Part 2 of 5

Find the critical values. Round the answers to three decimal places.

The critical values are

and

.

Part:2 / 5

2 of 5 Parts Complete

Part 3 of 5

Compute the test statistic. Round the answer to three decimal places.

=2

Part:3 / 5

3 of 5 Parts Complete

Part 4 of 5

Determine whether to reject

H0

.

Do not reject the null hypothesis

H0

.

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