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Suppose that the lifetime (years) of a certain type of electronic component (X) has a gamma distribution with mean 18.0 and variance 72.0. (a)Give the

Suppose that the lifetime (years) of a certain type of electronic component (X) has a gamma distribution with mean 18.0 and variance 72.0. (a)Give the pdf of X. (b)Using a normal approximation, find P(X 30.0)

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