Estimating the parameters of a bathtub-shaped distribution under progressive type-II censoring

Manoj Kumar Rastogi, Yogesh Mani Tripathi and Shuo-Jye Wu

Journal of Applied Statistics, 2012, vol. 39, issue 11, 2389-2411

Abstract: We consider the problem of estimating unknown parameters, reliability function and hazard function of a two parameter bathtub-shaped distribution on the basis of progressive type-II censored sample. The maximum likelihood estimators and Bayes estimators are derived for two unknown parameters, reliability function and hazard function. The Bayes estimators are obtained against squared error, LINEX and entropy loss functions. Also, using the Lindley approximation method we have obtained approximate Bayes estimators against these loss functions. Some numerical comparisons are made among various proposed estimators in terms of their mean square error values and some specific recommendations are given. Finally, two data sets are analyzed to illustrate the proposed methods.

Date: 2012
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DOI: 10.1080/02664763.2012.710899

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