A new three-parameter lifetime distribution and associated inference

Abstract: In this paper, a new three-parameter lifetime distribution is introduced and many of its standard properties are discussed. These include shape of the probability density function, hazard rate function and its shape, quantile function, limiting distributions of order statistics, and the moments. The unknown parameters are estimated by the maximum likelihood estimation procedure. We develop an EM algorithm to find the maximum likelihood estimates of the parameters, because they are not available in closed form. The Fisher information matrix is also obtained and it can be used for constructing the asymptotic confidence intervals. Finally, a real-data application is given to demonstrate the performance of the new distribution.