1. Department of Economics and Statistics, Dr Hasan Murad School of Management (HSM), University of Management and Technology, Lahore 54770, Pakistan
2. Department of Statistics, Virtual University of Pakistan, Lahore 54000, Pakistan
3. Industrial and Systems Engineering Department, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
4. Centre for Smart Mobility and Logistics, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
5. Department of Mathematics, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia