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Suppose that X, Y, and Z are jointly distributed random variables, that is, they are defined on the same sample space. Suppose that we also

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Suppose that X, Y, and Z are jointly distributed random variables, that is, they are defined on the same sample space. Suppose that we also have the following. E(X) =2 E(Y) =0 E(Z) = 8 Var(X) = 15 Var(Y) =47 Var(Z) =20 Compute the values of the expressions below. E (5-4Z) = 0 -5X-5Z X 5 ? E 3 = 0 Var(-X-4) = 0 E(2X2) = 0

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