Question: 7.20 The moment-generating function of a certain Poisson random variable X is given by MX (t) = e9(e t 1) . Find P(

7.20 The moment-generating function of a certain Poisson random variable X is given by MX (t) = e9(e t −1) .

Find P(μ − σ ≤ X ≤ μ + σ).

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