1. Department of Mathematics and Statistics, College of Science, Imam Mohammad Ibn Saud Islamic University, Riyadh, Saudi Arabia
2. Department of Basic Sciences, Higher Institute of Administrative Sciences, Osim, Egypt
3. Department of Acoustic, School of Science, Engineering, and Environment, Salford University, Great Manchester, UK
4. Department of Computer Science, Faculty of Science, Diyala University, Baqubah, Diyala, Iraq
5. Faculty of Business Administration, Egyptian E-Learning University, Giza, Egypt
6. Department of Statistics and Insurance, Faculty of Commerce, Zagazig University, Zagazig, Egypt