Re: DSE 2010 Q47 ,48

Posted by sonudelhi on Jun 17, 2012; 10:21am
URL: http://discussion-forum.276.s1.nabble.com/DSE-2010-Q47-48-tp7577947p7577952.html

hey...1 is quite easy

Mean X2=E[X2]=Var[X]-E[X]
                    =sigma2-0=sigma2