作者PrinceAries (This is Aries Speaking)
看板Grad-ProbAsk
标题[问题] Poisson的证明
时间Fri Mar 20 19:57:42 2009
Let X ,X ,...,X be independent Poisson random variables with respective
1 2 n
mean μ ,μ ,...,μ .
1 2 n
Use the tools of moment generating functions to prove that X ,X ,...,X
1 2 n
is also a Poisson variable.
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请问各位高手这题要怎麽下手阿...
iid
我看题目都觉得怪怪的，前面已经说 X ,X ,...,X ～ Poisson，
1 2 n
但是後面又要证X ,X ,...,X 是Poisson???
1 2 n
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1F：推 haolihy:我猜是要证相加也是Poisson 03/20 20:00
2F：→ PrinceAries:是喔!!如果是这样的话应该就OK了^^~谢谢 03/20 20:03