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) = 4 E(Y) = -5 Var (X) = 26 Var (Y) = 19 Var (z) = 28 E(Z) = 8 Compute the values of the expressions below. E (5 + 32) - 0 () - 0 Var (2 - 4X) - 0 E(-31") - O

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