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)