The length of time, in minutes, for an airplane to obtain
Chapter , Problem 2.83(choose chapter or problem)
The length of time, in minutes, for an airplane to obtain clearance for takeoff at a certain airport is a random variable Y = 3X 2, where X has the density function f(x) = 1 4 ex/4, x> 0 0, elsewhere. Find the mean and variance of the random variable Y .
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