7. Suppose X has a Poisson distribution such that 3P(X = 1) = P(X = 2). a) Find P(X = 4) b) Find mean and variance of -10X + 15

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7. Suppose X has a Poisson distribution such that 3P(X = 1) = P(X = 2).
a) Find P(X = 4)
b) Find mean and variance of -10X + 15
Transcribed Image Text:7. Suppose X has a Poisson distribution such that 3P(X = 1) = P(X = 2). a) Find P(X = 4) b) Find mean and variance of -10X + 15
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