1. Department of Mathematics, Faculty of Science, Al al-Bayt University, Mafraq 25113, Jordan
2. Faculty of Graduate Studies for Statistical Research, Cairo University, Giza 12613, Egypt
3. Department of Mathematics and Statistics, College of Science, Imam Mohammad Ibn Saud Islamic University, Riyadh 11432, Saudi Arabia
4. Department of Statistics and Operations Research, King Saud University, Riyadh 11451, Saudi Arabia