Suppose XX and YY are independent random variables for which Var(X)=7Var(X)=7 and Var(Y)=7.Var(Y)=7. (a) Find Var(X−Y+1).Var(X−Y+1)....

Question

Question

Suppose XX and YY are independent random variables for which Var(X)=7Var(X)=7 and Var(Y)=7.Var(Y)=7.

(a) Find Var(X−Y+1).Var(X−Y+1).

(b) Find Var(2X−3Y)Var(2X−3Y)

(c) Let W=2X−3Y.W=2X−3Y. Find the standard deviaton of W.W.

Answer 1

Answer #1

Answer 2

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