Question: 21. Cons truct a 90% interval e s t ima t e o f th e ratio o f th e populat ion variances us

21. Cons truct a 90% interval e s t ima t e o f th e ratio o f th e populat ion variances us ing th e fol lowing result s from tw o in d ep en d e n t ly drawn s amp l e s from normal ly dis tributed populat ions .

Sample 1: == 157, s = 23.2, and n = 9 Sample

Sample 1: == 157, s = 23.2, and n = 9 Sample 2:2 148, s = 19.9, and n

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