1. Department of Mathematical and Statistical Sciences, Marquette University, 1313 W. Wisconsin Ave., Milwaukee, WI 53233, USA
2. Laboratory of Probability and Statistics (LaPS), Department of Mathematics, Badji Mokhtar Annaba University, Annaba 23000, Algeria
3. Department of Statistics and Operations Research, Faculty of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
4. Department of Statistics, National College of Business Administration and Economics, Lahore 54660, Punjab, Pakistan
5. Department of Applied, Mathematical and Actuarial Statistics, Faculty of Commerce, Damietta University, Damietta 34517, Egypt
6. Department of Statistics, Mathematics and Insurance, Benha University, Benha 13511, Egypt