1. Saman Hanif Shahbaz:
Department of Statistics, Faculty of Science King Abdulaziz University, Jeddah, Saudi Arabia
2. Mashail Al–Sobhi:
Department of Mathematics Umm Al – Qura University, Makkah, Saudi Arabia
3. Muhammad Qaiser Shahbaz:
Department of Statistics, Faculty of Science King Abdulaziz University, Jeddah, Saudi Arabia
4. Bander Al–Zahrani:
Department of Statistics, Faculty of Science King Abdulaziz University, Jeddah, Saudi Arabia