Departamento de Estatística , Universidade de S?o Paulo , S?o Paulo , Brazil
Abstract:
In this article, we deal with the issue of performing accurate small-sample inference in the Birnbaum–Saunders regression model, which can be useful for modeling lifetime or reliability data. We derive a Bartlett-type correction for the score test and numerically compare the corrected test with the usual score test and some other competitors.