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8. Let X1, .. ., X, be n random draws with replace- ment from a population of numbers with mean u and standard deviation o.

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8. Let X1, .. ., X, be n random draws with replace- ment from a population of numbers with mean u and standard deviation o. What is the expected value of X -H ? ol vn 9. Suppose X and Y are independent random vari- ables with E(X ) = p1, var ( X) = of E(Y) = /2, and var (Y ) = 02. Compute E(2X - 0.1Y + 5), E(MIX + o; Y + #2). var(-3Y + (2X + 999), sd(5X - 14Y)

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