Question: 7. Let X 1, X 2, ..., X 7 be independent random variables with mean ? and variance ? 2 . Suppose that we have

7. Let X1, X2, ..., X7 be independent random variables with mean ? and variance ?2.

Suppose that we have following two estimators of ?.Which one you

recommend and why?

7. Let X1, X2, ..., X7 be independent random variables with

\f

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