Question: Consider again the data set of glass sheet thicknesses in Problem 9.3.6 with sample sizes n = m = 41. Construct a 90% confidence interval

Consider again the data set of glass sheet thicknesses in Problem 9.3.6 with sample sizes n = m = 41. Construct a 90% confidence interval for the ratio of the variances of the thicknesses of glass sheets produced by the two processes.

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