Abdur Razzaque Mughal
Department of Statistics, Government College University,Lahore,Pakistan
Zakiyah Zain
Department of Mathematics and Statistics, School of Quantitative Sciences, UUM College of Arts and Sciences,Universiti Utara Malaysia, UUM Sintok 06010, Kedah,Malaysia
Nazrina Aziz
Department of Mathematics and Statistics, School of Quantitative Sciences, UUM College of Arts and Sciences,Universiti Utara Malaysia, UUM Sintok 06010, Kedah,Malaysia