1. Department of Mathematics, University of Management and Technology, Lahore 54000, Pakistan
2. Department of Mathematical Sciences, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
3. Department of Mathematics, College of Science, Qassim University, Buraydah 51452, Saudi Arabia
4. Department of Operations and Management Research, Faculty of Graduate Studies for Statistical Research, Cairo University, Giza 12613, Egypt