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) =-6 Var (X) = 23 E (Y) =-7 Var (Y) = 32 Var (Z) = 33 E (Z) = 9 Compute the values of the expressions below. E (-3Y + 2) = - 0 -(")-0 2Y – 2X -5 - Var (sz) = 0 =(-2) - 0 olo

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