問題詳情
23. The number of injury claims per month is modeled by a random variable N with
P[N=n]=
Calculate the probability of at least one claim during a particular month, given that there have been at most four claims during that month.
(A) 1/3
(B) 2/5
(C) 1/2
(D) 3/5
(E) 5/6
參考答案
答案：B
統計：A:0,B:1,C:0,D:0,E:0
難度：計算中