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We have the following information about the random variables XX and YY: X=1.5, Y=1 , Var(X)=4 Var(Y)=0.25 Calculate the variance of Z=4X+4Y a) when the

We have the following information about the random variables XX and YY: X=1.5, Y=1 , Var(X)=4 Var(Y)=0.25 Calculate the variance of Z=4X+4Y a) when the coefficient of correlation is (X,Y)=0.17 b) when X and Y are independent random variables:

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