問題詳情
206. The annual profit of a life insurance company is normally distributed.
The probability that the annual profit does not exceed 2000 is 0.7642. The probability
that the annual profit does not exceed 3000 is 0.9066.
Calculate the probability that the annual profit does not exceed 1000.
(A) 0.1424
(B) 0.3022
(C) 0.5478
(D) 0.6218
(E) 0.7257
參考答案
答案:C
統計:A:0,B:0,C:0,D:0,E:0
難度:計算中