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.
关键词：Gompertz distribution; partially accelerated life test; maximum likelihood estimation; Newton-Raphson method; fisher information matrix; Monte Carlo simulation; type-II censoring; optimal design; generalized asymptotic variance
