If X1, X2, and X3 are independent random variables with E(X1) = 4, E(X2) = 3, E(X3) = 2, V(X1) = 1, V(X2) = 5, V(X3) = 2, and Y = 2X1 + X2 – 3X3, determine the following.

(a) E(Y)

(b) V(Y)

 

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