$ 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)=-5 E(Y)=6 E (Z)=3 Var (X)=15 Var (Y) = 10 Var (Z) = 29 Compute the values of the expressions below. E(-5Z+5)= E(³X+Y)-0 -5 Var (3Z-2)= = E(-2Z²) = 0 00 X

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