NO.PZ2019040801000018
问题如下:
Assume that the number of faulty vehicles is subject to the Possion distribution. And assume that 5% of the cars coming to the assembly line are faulty. Then randomly select 5 cars in the assembly line, and what is the probability that one of them is faulty?
选项:
A. 0.195
B. 0.235.
C. 0.181.
D. 0.179.
解释:
A is correct.
考点:Poisson Distribution
解析:根据Poisson分布的性质,λ=np=5*0.05=0.25
课程里说题目里有average就用poisson分布,这道题没有怎么判断呢