作者frankgood (法兰克)
看板Statistics
标题[问题] 一题poisson分配的问题
时间Wed Dec 23 21:40:24 2009
The number of defects per yard Y for a certain fabric is known to have a
Poisson distribution with parameter λ. However, λ itself is a random
variable with probability density function given by
f(λ)= e^-λ , λ大於等於0
Find the unconditional probability function for Y .
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