Suppose that $X \sim \text{Poisson}(2.7)$. Find $P(X = 3)$.
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Step 1
Recall the probability mass function (PMF) for a Poisson distribution: $P(X=k) = \frac{e^{-\lambda}\lambda^k}{k!}$, where $\lambda$ is the average rate and $k$ is the number of events. Show more…
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