“…Estimators Srivastava (1967), Reddy (1974), Nangsue (2009), Kadilar (2016), Soponviwatkul and Lawson (2017), Ijaz and Ali (2018 Bahl and Tuteja (1991 Kadilar and Cingi (2003 Sisodia and Dwivedi (1981), Upadhyaya and Singh (1999), Singh and Tailor (2003), Singh et al (2004), Al-Omari et al (2009, Yan and Tian (2010), Kumarpandiyan (2012a, 2012b), Jeelani et al (2013), Jerajuddin and Kishun (2016) estimators International Journal of Mathematical, Engineering and Management Sciences Vol. 4, No.…”