Suppose that X and Y are random variables such that E(Y
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Suppose that X and Y are random variables such that E(Y |X) = aX + b. Assuming that Cov(X, Y ) exists and that 0 < Var(X
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Suppose that X and Y are random variables such that E(Y |X) = aX + b. Assuming that Cov(X, Y ) exists and that 0 < Var(X) < ?, determine expressions for a and b in terms of E(X), E(Y ), Var(X), and Cov(X, Y ).
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