Question: Problem 8. Let X1,..., X, be independent normal random variables with unknown mean / and unknown variance o2. (1) Show that X'S is an unbiased

Problem 8. Let X1,..., X, be independent normal random variables with unknown mean / and unknown variance o2. (1) Show that X'S" is an unbiased estimator of po?. (2) Is there a better unbiased estimator of po?? If so find it

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