Combination Mean Residual Life Order with Reliability Applications

The purpose of this paper is to introduce, study and analyze a new stochastic order which lies in the framework of the mean residual life and the combination convexity orders. Several preservation properties of the new order under reliability operations of monotone transformation, mixture, weighted distributions and shock models are discussed. In addition, two characterization properties of the new order based on the concept of residual life at random time and the concept of excess lifetime in renewal processes are given. Finally, we highlight some new applications of this order in the context of reliability and survival analysis.