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Confidence interval for the ratio of population variances

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A professor decides to compare the variance in the annual salaries of associate professors with the variance in the annual salaries of full professors. A sample of 15 associate professors reveals a sample variance of 609,961. A sample of 14 full professors reveals a sample variance of 674,041. Construct and interpret a 90% confidence interval for the ratio of the population variances for the different ranks of professors.

Reference no: EM132495499

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