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Suppose that X and Y are random variables such that E(X) = 3, E(Y) = 1, Var(X) = 2 and Cov(X + Y, X -

Suppose that X and Y are random variables such that E(X) = 3, E(Y) = 1, Var(X) = 2 and Cov(X + Y, X - Y) = 1. (a) (5 points) Find Var(X/3). (b) (5 points) Find E(X2 + 2Y). (c) (5 points) Find Var (Y)

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