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the lifetime performance reached the pre-assigned level of significance with a given lower specification limit under progressive type I interval censoring. ... We present the likelihood inferences on the lifetime performance index CL to evaluate the performance of lifetimes of products following the skewed Exponentiated Frech'et distribution in many manufacturing ... Results The Maximum Likelihood Estimator for the Lifetime Performance Index and the Testing Procedure Let X 1 , . . . , X m be the progressive type I interval censored sample observed at time points ...doi:10.3390/sym13061032 fatcat:khxd6e2ahbg7plczl5wdzotyry
The lifetime performance index CL is frequently used to monitor the larger-the-better lifetime performance of products. ... We derived the uniformly minimum variance unbiased estimator (UMVUE) for CL, and we used this estimator to develop a hypothesis testing procedure of CL under a lower specification limit based on the progressive ... Wu and Hsieh  found the MLE for the lifetime performance index based on the progressive type-I interval censored sample and built a testing procedure about CL when the lifetime of products follows ...doi:10.3390/sym13081322 fatcat:mqncmykexzcojitmoeod24evku