Solved: Let three random samples of sizes n1 20, n2 10, and n3 8 be taken from a
Chapter 7, Problem 7-8(choose chapter or problem)
Let three random samples of sizes n1 20, n2 10, and n3 8 be taken from a population with mean and variance 2 . Let , , and be the sample variances. Show that is an unbiased estimator of 2
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