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Okechukwu J. Obulezi

Publications (5)

Chris-Jerry Distribution and Its Applications

Chrisogonus K. Onyekwere & Okechukwu J. Obulezi · Asian Journal of Probability and Statistics · 2022

In this paper, a new one-parameter distribution named Chris-Jerry is suggested from two component mixture of Exponential (\(\theta\)) distribution and Gamma(3; \(\theta\)) distribution with mixing proportion \(p=\frac{\theta}{\theta + 2}\) having a flexibility advantage in modeli...

Open access Research Article 10.9734/ajpas/2022/v20i130480

Exponentiated Power Lindley-Logarithmic Distribution and its Applications

Abuh Musa, Sidney I. Onyeagu & Okechukwu J. Obulezi · Asian Research Journal of Mathematics · 2023

This article proposes a new distribution call the Exponentiated Power Lindley-Logarithmic Distribution for modeling real life data. The distribution is motivated by the Exponentiated Power Lindley distribution. The quantile function is derived and the Maximum likelihood estimates...

Open access Research Article 10.9734/arjom/2023/v19i8686

Comparative Study Based on Simulation of Some Methods of Classical Estimation of the Parameters of Exponentiated Lindley – Logarithmic Distribution

Abuh Musa, Sidney I. Onyeagu & Okechukwu J. Obulezi · Asian Journal of Probability and Statistics · 2023

In this article, some non-bayesian estimation procedures of the Exponentiated Power Lindley-Logarithmic Distribution for modeling real life data are considered. A simulation study is carried out to determine the best among others using the root meas squared error values. Real lif...

Open access Research Article 10.9734/ajpas/2023/v22i4489

Inference on the Parameters of Zubair-Exponential Distribution with Application to Survival Times of Guinea Pigs

Ifeanyi C. Anabike, Chinyere P. Igbokwe, Chrisogonus K. Onyekwere & Okechukwu J. Obulezi · Journal of Advances in Mathematics and Computer Science · 2023

In this paper, we derived a sub-model of Zubair-G familiy of distribution named Zubair-Exponential distribution with two parameters. Simulation of the Estimates of the parameters based on some classical methods are obtained. The likelihood equations and the maximum likelihood est...

Open access Research Article 10.9734/jamcs/2023/v38i71769

Simulation Study of the Bayesian and Non-Bayesian Estimation of a new Lifetime Distribution Parameters with Increasing Hazard Rate

Dorathy O. Oramulu, Chinyere P. Igbokwe, Ifeanyi C. Anabike, Harrison O. Etaga & Okechukwu J. Obulezi · Asian Research Journal of Mathematics · 2023

In this paper, a new distribution known as the Shifted Chris-Jerry (SHCJ) distribution is proposed. The proposition is motivated by the need to compare the efficiency of various classical estimation methods as well as the bayesian estimation using gamma prior at linear-exponentia...

Open access Research Article 10.9734/arjom/2023/v19i9711