問題詳情
159. The number of traffic accidents per week at intersection Q has a Poisson distribution with mean 3. The number of traffic accidents per week at intersection R has a Poisson distribution with mean 1.5.
Let A be the probability that the number of accidents at intersection Q exceeds its mean.
Let B be the corresponding probability for intersection R.
Calculate B – A.
(A) 0.00
(B) 0.09
(C) 0.13
(D) 0.19
(E) 0.31
參考答案
答案：B
統計：A:0,B:0,C:0,D:0,E:0
難度：計算中