Khaoula Aidi
Laboratory of probability and statistics LaPS, University Badji Mokhtar, Annaba, Algeria
Nadeem S. Butt
Department of Family and Community Medicine, Faculty of Medicine Rabigh, King Abdulaziz University, Jeddah, Kingdom of, Saudi Arabia
M. Masoom Ali
Department of Mathematical Sciences, Ball State University, Muncie, Indiana 47306, USA
Mohamed Ibrahim
Department of Applied, Mathematical and Actuarial Statistics, Faculty of Commerce, Damietta University, Damietta, Egypt
Haitham M. Yousof
Department of Statistics, Mathematics and Insurance, Benha University, Benha 13518, Egypt
Wahid A. M. Shehata
Department of Mathematics, Statistics and Insurance, Faculty of Business, Ain Shams University, Egypt