On Some Stochastic Ordering Comparisons for Renewal Processes
Suman Kalyan Ghosh *
Department of Applied Mathematics, Alliance University, Bangalore 562106, India.
S. Ravi
Department of Studies in Statistics, University of Mysore, Mysore 570006, India.
*Author to whom correspondence should be addressed.
Abstract
After a brief introduction to ordinary renewal process, we have defined compound renewal process generated by an ordinary renewal process followed by the distributional properties of the corresponding random variables. A few results are obtained by comparing independent renewal processes with respect to several stochastic orderings between the generating inter-arrival time random variables, like, stochastic order, hazard rate order, likelihood ratio order and variability order, as well as some ageing classes of the generating random variables. Some numerical illustrations are given. The results obtained here appear to be new.
Keywords: Models theoretical, Renewal process, compound renewal process, stochastic ordering, variability ordering, ageing classes
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