S. U. Gulumbe

On Sequential Probability Sampling Plan for a Truncated Life Tests Using Rayleigh Distribution

A. B. Zoramawa & S. U. Gulumbe · Asian Journal of Probability and Statistics · 2021

This paper proposed a sequential probability sampling plan for a truncated life test using a Rayleigh distribution from  a designed double sampling plans where the interest was to obtain the minimum sample size necessary to assure that the average life time of a product is longer...

Open access Research Article 10.9734/ajpas/2021/v15i130339

Efficiency and Consistency Assessment of Value at Risk Methods for Selected Banks Data

Yakubu Musa, Iniabasi Emmanuel Etuk & S. U. Gulumbe · Journal of Advances in Mathematics and Computer Science · 2020

The study assesses Value at Risk (VaR) methods with respect to their efficiency and consistency in selected banks of the Nigeria Stock Market. The daily data on share prices of each bank was used from 2006 to 2018. The Value at Risk of each bank was estimated and the predictive p...

Open access Research Article 10.9734/jamcs/2020/v35i230245