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![PoISSOn distribution
Probability function:
\[
P_{Y}(k)=P(Y=k)=\frac{\lambda^{k}}{k !} \exp (-\lambda)
\]
Mean:
Variance:
\( \](https://media.cheggcdn.com/study/197/197933a9-3ce9-4d6c-b189-4503619cef87/image)
Expert Answer
Ans :-Let X be a Poisson random variable with parame