問題詳情
4. Which of the following statement about Poisson distribution is not true ?
(A) It is not a symmetric distribution.
(B) Its mean and variance are equal.
(C) Value of the random variable needs to be nonnegative.
(D)Sum of two independent Poisson distributions is not a Poisson distribution.
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