Question: A teacher wishes to compare two different groups of students with respect to their mean time to complete a standardized test. The time required is determined for each group. The data summary is given below. Test the claim at = 0.10, that there is no difference in variance. Give the critical region, test statistic value, and conclusion for the F test.
n ₁ = 60     s ₁ = 11
n ₂ = 120    s ₂ = 17
= 0.10

 State the null and alternate hypotheses

 Determine which test statistic applies, and calculate it

 Determine the critical region

 State your decision: Should the null hypothesis be rejected?

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