Question: A random variable is said to have a gamma distribution if its density is given, for some > 0, a > 0, by where f(t)

A random variable is said to have a gamma distribution if its density is given, for some > 0, a > 0, by where f(t) = - Ae(At)-1

(a) 10, ' T() = f e-x-1dx. == Show that this is IFR when a 1 and DFR when a 1

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