問題詳情

Problem 18. (3.0 %) Suppose X and Y are Poisson random variables withparameters

respectively, where X and Y are independent. DefineW = X + Y, then,
(A) W is Poisson with parameter


(B) W is Poisson with parameter


(C) W may not be Poisson but has mean equal to


(D) W may not be Poisson but has mean equal to

參考答案

答案：[無官方正解]
難度：計算中-1
書單：沒有書單，新增