Under models of isolation-by-distance, population structure is determined by the probability of identity-by-descent between pairs of genes according to the geographic distance between them. Well established analytical results indicate that the relationship between geographical and genetic distance depends mostly on the neighborhood size of the population which represents a standardized measure ...

In this article, four new families named as Weibull extended exponentiated-X (WEE-X), Lomax (LEE-X), Logistic (LGCEE-X), and Burr III (BIIIEE-X) with their quantile functions are proposed. The expressions for distribution function density of BIIIEE-X family written in terms linear combinations the exponentiated densities based to parent model. New models, i.e., Weibul (WEEW), (LEEW), (LGCEEW), ...

We introduce a new two-parameter lifetime model, referred to alpha power transformed inverted Topp-Leone, derived by combining the transformation-G family with Topp-Leone distribution. Structural properties of proposed distribution are implemented like; quantile function, residual and reversed life, Rényi entropy measure, moments incomplete moments. The maximum likelihood, weighted least square...

Covid-19 has become an important topic this days, because of its bad effect in many fields such as Economics, industrial and commerce. In paper, will be studied statistically point view depending on the recovery cases Arab Republic Egypt interval (20 March to 20 August 2020). A power odd generalized exponential Lomax distribution been considered. Some mathematical properties are studied. The me...

In this article, we present a Markov Bernoulli Lomax (MB-L) model, which is obtained by countable mixture of and distributions, with decreasing unimodal hazard rate function (HRF). The new model contains Marshall- Olkin distributions as special case. mathematical properties, behavior probability density (PDF), HRF, rth moments, moment generating (MGF) minimum (maximum) Markov-Bernoulli Geometri...