  Dixit and Jabbari Nooghabi (2010) had derived the MLE and UMVUE of the
probability density function (pdf) and cumulative distributive function (cdf).
Further, it had been shown that MLE is more efficient than UMVUE. He, Zhou and
Zhang (2014) have also derived the same and made a remark that the work of
Dixit and Jabbari Nooghabi (2010) is not correct. We have made a comments with
detail algebra that our results are correct. Further, we have also given the R
code.
