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.

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Part 2 of 5

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

The critical values are and .

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Part 3 of 5

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

=2

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Part 4 of 5

Determine whether to reject

H0

.

Do not reject the null hypothesis H0 .