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Interval Estimations of the Two-Parameter Exponential Distribution

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  • Lai Jiang
  • Augustine C. M. Wong

Abstract

In applied work, the two-parameter exponential distribution gives useful representations of many physical situations. Confidence interval for the scale parameter and predictive interval for a future independent observation have been studied by many, including Petropoulos (2011) and Lawless (1977), respectively. However, interval estimates for the threshold parameter have not been widely examined in statistical literature. The aim of this paper is to, first, obtain the exact significance function of the scale parameter by renormalizing the ð ‘ âˆ— -formula. Then the approximate Studentization method is applied to obtain the significance function of the threshold parameter. Finally, a predictive density function of the two-parameter exponential distribution is derived. A real-life data set is used to show the implementation of the method. Simulation studies are then carried out to illustrate the accuracy of the proposed methods.

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  • Lai Jiang & Augustine C. M. Wong, 2012. "Interval Estimations of the Two-Parameter Exponential Distribution," Journal of Probability and Statistics, Hindawi, vol. 2012, pages 1-8, April.
    • Handle: RePEc:hin:jnljps:734575
    DOI: 10.1155/2012/734575
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