How is it possible to calculate a confidence interval on the ratios of two stand

Question

How is it possible to calculate a confidence interval on the ratios of two standard deviations?

You cannot calculate that

You can do this, but it requires formulas that are not presented in the book

You calculate the confidence interval on the ratio of the variances and then take the square root

You square the values that are given in the formula in the book

You cannot calculate that

You can do this, but it requires formulas that are not presented in the book

You calculate the confidence interval on the ratio of the variances and then take the square root

You square the values that are given in the formula in the book

Explanation / Answer

it is possible to calculate confideence interval for variance and varience is the square value of standard daviation so for calculating the

so we have to find confidence interval for variance .so the answer will be

C .u can calculate the confidence interval on the ratio of variance first then take the square root

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