- #1

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If X has a Poisson distribution so that 3P(X=1)=P(X=2)

find the pdf of X, and P(X=4)????

- Thread starter tiger2380
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- #1

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If X has a Poisson distribution so that 3P(X=1)=P(X=2)

find the pdf of X, and P(X=4)????

- #2

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"pdf," I assume means Poisson Distribution Function.

Well, the function is [tex]P(n)=\frac{e^{-\kappa}\kappa^n}{n!}[/tex]

So since we know values of n, the important thing is to find the particular value of the constant [tex]kappa, \kappa[/tex]

Well, the function is [tex]P(n)=\frac{e^{-\kappa}\kappa^n}{n!}[/tex]

So since we know values of n, the important thing is to find the particular value of the constant [tex]kappa, \kappa[/tex]

Last edited:

- #3

mathman

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It looks like k=6.

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