Ratio of two population variance

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

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 …

The expert examines the ratio of two populations variance.