Question: a) Given E(X) = 12, E(Y) = -4, E(XY) = -15, Var(X) = 4, Var(Y) =6, and X and Y are independent events, compute: i.

a) Given E(X) = 12, E(Y) = -4, E(XY) = -15, Var(X) = 4, Var(Y) =6, and X and Y are independent events, compute:

i. E(3X + 4Y)

ii. Cov(6X,2Y)

iii. Cov( X+2Y, 2X+3Y)

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