Two notes of statistical analysis about two-parameter Birnbaum-Saunders fatigue life distribution
XU Xiaoling1, WANG Ronghua2, GU Beiqing1
1. School of Statistics and Information, Shanghai University of International Business and Economics, Shanghai 201620, China;
2. Mathematics and Science College, Shanghai Normal University, Shanghai 200234, China
Abstract:We know that two methods about interval estimate of scale parameter for two-parameter Birnbaum-Saunders fatigue life distribution are shown not always capable of obtaining the interval estimate of scale parameter based on the results of Monte Carlo simulations. Moreover, there is a mistake in deriving the confidence intervals of scale parameter and parameter function with the generalized pivot method. A corresponding counter example is illustrated, and the correct proof is provided.
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