1. School of Economics and Statistics, Guangzhou University, Guangzhou 510006, China (Corresponding author), e-mail: saber@e.gzhu.edu.cn, https://orcid.org/0000-0001-5851-6219
2. Department of Statistics, Government Ambala Muslim Graduate College Sargodha, Sargodha 40100, Pakistan, https://orcid.org/0000-0001-8122-082X
3. Department of Statistics, University of Sargodha, Sargodha 40100, Pakistan, https://orcid.org/0000-0003-2073-918X
4. Department of Mathematics and Statistics, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia, https://orcid.org/0000-0002-7599-6928
5. Department of Statistics, Government College University Faisalabad, Faisalabad 38040, Pakistan