77. The profit for a new product is given by Z = 3X – Y – 5. X and Y are independent random variable
問題詳情
77. The profit for a new product is given by Z = 3X – Y – 5. X and Y are independent random variables with Var(X) = 1 and Var(Y) = 2. Calculate Var(Z). (A) 1 (B) 5 (C) 7 (D) 11 (E) 16