Planning step-stress life tests with type-ii censored data

摘要

This study discusses the point and interval estimations of two-parameter Gompertz distribution under partially accelerated life tests with Type-II censoring. Also, the study considers the optimal design problem in the case of time step-stress model. The maximum likelihood estimators and approximate confidence intervals of the model parameters are derived. Also, optimum test plans for the time step-stress life tests are developed. For illustration, a simulation study is provided.