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For Two Independent Random Variables X and Y,which of the Following

Question 238

Multiple Choice

For two independent random variables X and Y,which of the following identities is always true?

A) E(2X + 3Y) = E(X) + E(Y) + 5
B) Var(2X + 3Y) =2Var(X) + 3Var(Y)
C) Var(2X + 3Y) = 4Var(X) + 9Var(Y)
D) E(2X + 3Y) = 5E(X+Y)

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