Abstract
The Weibull negative binomial distribution (BNW) is proposed which generalizes the Weibull geometric distribution (WG) is introduced by Barreto-Souza et al. (2010). Furthermore, we propose a model for survival data with cure fraction, which includes as special cases the traditional models of survival with cure fraction of Berkson & Gage (1952) and Chen et al. (1999). The new propose survi…