If S21 and S22 represent the variances of independent random

| January 30, 2017

Question
If S21 and S22 represent the variances of independent random samples of size n1 = 25 and n2 — 31, taken from normal populations with variances σ21 = 10 and erf = 15, respectively, find P(S21/S22 > 1.26).

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