1. Department of Mathematics and Statistics, College of Science, King Faisal University, Al-Ahsa, Saudi Arabia
2. Department of Applied Statistics and Insurance, Faculty of Commerce, Mansoura University, Mansoura, Egypt
3. Department of Statistics, The University of Azad Jammu and Kashmir, Muzaffarabad, Pakistan
4. Department of Statistics, Jahangirnagar University, Savar, Dhaka, Bangladesh