1. Department of Mathematical Sciences, College of Science, Princess Nourah bint Abdulrahman University 1 , P.O. Box 84428, Riyadh 11671, Saudi Arabia
2. Faculty of Technology and Development, Zagazig University 2 , Zagazig 44519, Egypt
3. Department of Statistics, Faculty of Science, King Abdulaziz University 3 , Jeddah 21589, Saudi Arabia
4. Department of Statistics, Faculty of Commerce, Zagazig University 4 , Zagazig 44519, Egypt