1. Faculty of Graduate Studies for Statistical Research, Department of Mathematical Statistics, Cairo University 1 , Giza 12613, Egypt
2. Department of Statistics, The Islamia University of Bahawalpur 2 , Bahawalpur 63100, Pakistan
3. Department of Statistics, Tribhuvan University, Tribhuvan Multiple Campus 3 , Palpa, Tansen, Lumbini 44600, Nepal
4. Department of Statistics and Operations Research, College of Science, King Saud University 4 , P.O. Box 2455, Riyadh 11451, Saudi Arabia
5. DICA, Politecnico di Milano, Piazza Leonardo da Vinci 32 5 , 20131 Milan (MI), Italy
6. Department of Mathematics, Faculty of Science, Helwan University 6 , Cairo, Egypt
7. Department of Mathematics, Faculty of Science, Tanta University 7 , Tanta 31527, Egypt