A random variable X has a poisson distribution with parameters 3. P(x<2) = A. $1 - 4e^{-3}$ B. $1 + 4e^{-3}$ C. $ rac{9}{2}e^{-3}$ D. $4e^{-3}$
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P(X < 2) = P(X = 0) + P(X = 1) The formula for the Poisson distribution is: P(X = k) = (e^(-λ) * λ^k) / k! where λ is the parameter of the Poisson distribution and k is the number of events. Show more…
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