Mathematics, 30.07.2021 01:20 shifaxoxoxo

A professor wants to make sure that two different versions of a test are equivalent. He decides to compare the variances of the test scores from each version. A sample of 24 scores on Version A has a sample variance of 1.161, while a sample of 17 scores from Version B has a sample variance of 3.627. Required:
Construct a 90 % confidence interval for the ratio of the population variances of the scores on the two versions of the test. Round the endpoints of the Interval to four decimal places, if necessary.

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A professor wants to make sure that two different versions of a test are equivalent. He decides to c...