2 votes 2 votes Answers: a) 0 b) n Sahil Gupta asked Nov 25, 2014 Sahil Gupta 1.3k views answer comment Share Follow See all 0 reply Please log in or register to add a comment.
0 votes 0 votes how did you find the Variance ?? Marv Patel answered Jun 21, 2015 Marv Patel comment Share Follow See 1 comment See all 1 1 comment reply Kaluti commented Aug 18, 2017 reply Follow Share by checking for n = 2 where 2 fair coins are tossed here possible outcomes will be hh , ht ,tt,th Xn = -2 , 0,2 , 0 p(X) (1/4) for every Xn E(X) = $\sum (x * p(x))$ = 0 var(X) = E(X^(2)) -( E(X))^(2) = 2 - (0)^(2) = n 0 votes 0 votes Please log in or register to add a comment.