Let X be the poisson random variable with parameter lambda. Obtain E(X^3) and E(X^4).

Please explain to me for the E(X^3) and i'll do the other one by myself.

Thank you loads

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- Feb 21st 2010, 03:20 AMmehnPoisson Distribution
Let X be the poisson random variable with parameter lambda. Obtain E(X^3) and E(X^4).

Please explain to me for the E(X^3) and i'll do the other one by myself.

Thank you loads - Feb 21st 2010, 03:33 AMMoo
Hello,

You can compute the moment generating function :

And use this property : (n-th derivative at t=0)