Let Y1 have an exponential distribution with mean and the conditional density of Y2
Chapter 5, Problem 5.141(choose chapter or problem)
Let Y1 have an exponential distribution with mean and the conditional density of Y2 given Y1 = y1 be f (y2 | y1) = 1/y1, 0 y2 y1, 0, elsewhere. Find E(Y2) and V(Y2), the unconditional mean and variance of Y2.
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