Question: Two different microscopic methods, A and B, are available for the measurement of very small dimensions in microns. As a result of several such measurements

Two different microscopic methods, A and B, are available for the measurement of very small dimensions in microns. As a result of several such measurements on the same object, estimates of variance are available as follows:

Method No. of observations Estimated variance A m = 15 s = 7.533 B n = 25 s = 1.112

Give an interval in which you are 95% sure that the ratio of the variances lies.

Method No. of observations Estimated variance A m = 15 s = 7.533 B n = 25 s = 1.112

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