試題詳解

211. A flood insurance company determines that N, the number of claims received in a month, is a random variable with P[N=n]= , for n=0,1,2,.... The numbers of claims received in different months are mutually independent.

Calculate the probability that more than three claims will be received during a consecutive two-month period, given that fewer than two claims were received in the first of the two months.
(A) 0.0062
(B) 0.0123
(C) 0.0139
(D) 0.0165
(E) 0.0185