Question: A sample of n = 18 observations from population A has a sample standard deviation of sx = 6.48, and a sample of m =

A sample of n = 18 observations from population A has a sample standard deviation of sx = 6.48, and a sample of m = 21 observations from population B has a sample standard deviation of sy = 9.62. Obtain a 909": confidence interval for the ratio of the population variances.

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