1. Department of Mathematical Sciences, College of Science, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia
2. Department of Mathematics and Statistics, Faculty of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh, Saudi Arabia
3. Department of Statistical, Faculty of Business Administration, Delta University for Science and Technology, Gamasa, Egypt
4. Department of Mathematics and Statistics, University of North Carolina, Wilmington, NC, USA
5. Department of Statistics, Al-Azhar University, Cairo, Egypt