A New Lifetime Distribution with Bathtube and Unimodal Hazard Function

In this paper we propose a new lifetime distribution which accommodate bathtub‐shaped, unimodal, increasing and decreasing hazard function. Some special particular cases are derived, including the standard Weibull distribution. Maximum likelihood estimation is considered for estimate the tree parameters present in the model. The methodology is illustrated in a real data set on industrial devices on a lite test.