Journal Published Online: 03 December 2014
Volume 44, Issue 1

On Designing Time-Censored Step-Stress Life Test for Lomax Distribution



This article presents optimum time step-stress partially accelerated life tests (SSPALTs) where a pre-specified censoring time is considered. The time to failure is assumed to have Lomax distribution. Maximum likelihood estimates (MLEs) of SSPALT model parameters are obtained. Moreover, a confidence intervals estimation for the parameters with associated coverage probabilities is obtained. In addition, optimum test plans for SSPALT are also developed. Such test plans minimize the generalized asymptotic variance (GAV) of the MLEs of the model parameters. To demonstrate the theoretical results, Monte Carlo simulations are introduced and a real life example is provided.

Author Information

Ismail, Ali
King Saud University, College of Science, Department of Statistics and Operations Research, Riyadh, SA Cairo University, Faculty of Economics & Political Science, Department of Statistics, Giza, EG
Pages: 7
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Stock #: JTE20140236
ISSN: 0090-3973
DOI: 10.1520/JTE20140236