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Yaoayao (偶承认偶是只色米) 于 (Sun Feb 10 21:53:13 2008) 提到:
Suppose that, conditional on N, X has a binomial distribution with N trials
and probability p of success, and that N is a binomial random variable with
m tials, and probability r of success. Find the unconditional distribution
of X.
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now (now) 于 (Sun Feb 10 23:56:16 2008) 提到:
f(X=k)=Sum( f(X=k|n)f(n) )
Do the sum
trials
with |
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