Let X and Y be random variables with Var(X)=0.64, Var(Y)=0.81, and Cov(X,Y) = 0.5. Find each of the following to two decimal places (if applicable). (a) Coefficient of correlation p(X,Y) 0.694 (b) Var(3X+Y+1) 9.57 (c) Cov(-2Y, 3X+Y+1) (d) p(-2Y, 3X+Y+1)

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