Selecting more reliable weibull populations than a control

Abstract

This paper deals with the selection of Weibull populations that are more reliable than a control population at some specified time. In the case when the shape parameters are known, a locally optimal selection rule is derived. From this rule, a modified one is proposed for the case when the shape parameter is unknown but has a known prior distribution. Simulation study shows that this modified rule is quite robust.

Keywords:

• Weibull population
• More reliable population
• Selection rule
• Control population
• Locally optimal criterion