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)=0Var(X)=35E(Y)=1Var(Y)=17E(Z)=7Var(Z)=31 Compute the values of the expressions below. E(4X1)=E(54Y+4Z)=Var(5Y)+2=E(5Y2)=.