Let X be a nonnegative random variable. We say that X is memory less if P(X >
Question:
P(X > s + t|X > t) = P(X > s) for all s, t ≥ 0
Show that a random variable with pdf fX(x) = (1/λ)e−x/λ, x > 0, is memory less.
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Related Book For 
Introduction To Mathematical Statistics And Its Applications
ISBN: 9780321693945
5th Edition
Authors: Richard J. Larsen, Morris L. Marx
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