3.4. Suppose 6 62, ... are independent and identically distributed random variables having mean and variance
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3.4. Suppose 6 62, ... are independent and identically distributed random variables having mean μ and variance 0-2. Form the random sum SN=6i +...+6N
(a) Derive the mean and variance of S, when N has a Poisson distribution with parameter A.
(b) Determine the mean and variance of S, when N has a geometric distribution with mean A = (1 - p)lp.
(c) Compare the behaviors in
(a) and
(b) as A - .
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Related Book For
An Introduction To Stochastic Modeling
ISBN: 9780126848878
3rd Edition
Authors: Samuel Karlin, Howard M. Taylor
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