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A note on stochastic ordering of order statistics

Published online by Cambridge University Press:  14 July 2016

Chunsheng Ma*
Affiliation:
University of Sydney
*
Postal address: School of Mathematics and Statistics, The University of Sydney, NSW 2006, Australia.

Abstract

A necessary and sufficient condition is obtained for a Poisson binomial random variable to be stochastically larger (or smaller) than a binomial random variable. It is then used to deal with the stochastic comparisons of order statistics from heterogeneous populations with those from a homogeneous population. The result has obvious applications in the stochastic comparisons of lifetimes of k-out-of-n systems having independent components.

Type
Short Communications
Copyright
Copyright © Applied Probability Trust 1997 

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