Re: DSE 2014 doubt

Posted by kk on Jun 15, 2015; 4:56am
URL: http://discussion-forum.276.s1.nabble.com/DSE-2014-doubt-tp7597718p7597773.html

Question 42.   Ms. A selects a number X randomly from the uniform distribution
on [0; 1]. Then Mr. B repeatedly, and independently, draws numbers
Y1; Y2; :::: from the uniform distribution on [0; 1], until he gets a number
larger than X=2, then stops. The expected number of draws that Mr. B
makes equals
(a) 2 ln 2
(b) ln 2
(c) 2=e
(d) 6=e