We study in detail the so-called beta-modified Weibull distribution, motivated by the wide use of the Weibull distribution in practice, and also for the fact that the generalization provides a continuous crossover towards ...

A five-parameter distribution so-called the beta modified Weibull distribution is defined and studied. The new distribution contains, as special submodels, several important distributions discussed in the literature, such ...

We study upper truncated Weibull random variables with density given by g-beta,delta,tau(t) = beta-delta-t-delta-1 exp(-beta-t-delta)(1 - exp(-beta-tau-delta))-1 for 0 less-than-or-equal-to t less-than-or-equal-to tau (tau ...

In this article, for the first time, we propose the negative binomial-beta Weibull (BW) regression model for studying the recurrence of prostate cancer and to predict the cure fraction for patients with clinically localized ...

We introduce the log-beta Weibull regression model based on the beta Weibull distribution (Famoye et al., 2005; Lee et al., 2007). We derive expansions for the moment generating function which do not depend on complicated ...

Ng and Kotz (1995) introduced a distribution that provides greater flexibility to extremes. We define and study a new class of distributions called the Kummer beta generalized family to extend the normal, Weibull, gamma ...

The postmastectomy survival rates are often based on previous outcomes of large numbers of women who had adisease, but they do not accurately predict what will happen in any particular patient’s case. Pathologic explana-tory ...