1. Department of Statistics & Operations Research, College of Sciences, King Saud University, Riyadh 11451, Saudi Arabia
2. Department of Economics, University of Molise, Via de Sanctis, 86100 Campobasso, Italy
3. Department of Computer Applications, Institute of Informatics & Management Sciences, Meerut 250004, India
4. Department of Engineering Mathematics, Koneru Lakshmaiah Education Foundation, Vaddeswaram 522302, India
5. Department of Mathematics, Marwadi University, Rajkot 360003, India