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253. Points scored by a game participant can be modeled by Z = 3X + 2Y – 5. X and Y are independent
問題詳情
253. Points scored by a game participant can be modeled by Z = 3X + 2Y – 5. X and Y are independent random variables with Var (X) = 3 and Var (Y) = 4.
Calculate Var (Z).
(A) 12
(B) 17
(C) 38
(D) 43
(E) 68
參考答案
答案:D
統計:A:1,B:0,C:0,D:0,E:0
難度:計算中
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