Question: Scores on the math SAT are normally distributed. A sample of 17 SAT scores had standard deviation s=90. Someone says that the scoring system for

Scores on the math SAT are normally distributed. A sample of 17 SAT scores had standard deviation s=90. Someone says that the scoring system for the SAT is designed so that the population standard deviation will be different than =78. Do these data provide sufficient evidence to contradict this claim? Use the a=0.01 level of significance.

State the null and alternate hypotheses.
Choose a significance level and find the critical value.
Compute the test statistic.
Determine whether to reject H0
State a conclusion.

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