Ratio of two population variance

Reference no: EM1391324

A manufacturer needs to compare the weights of a product produced at 2 different plants. A random sample of 16 items from Plant A has a standard deviation of 12 milligrams and random sample of 25 items from Plant B has a standard deviation of 15 milligrams. Supposing that both populations are normally distributed, construct a 99% confidence interval for the ratio of the two population variances.

Reference no: EM1391324

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