X and Y are independent random variables such that E(X) 10, Var(X)=2, E(Y)=8, Var(Y) = 3. Find

Question:

(a) E(5X+4Y),

(b) Var(5X+4Y),

(c) Var(X-Y),

(d) Var(X + Y).

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Shameen Tahir

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