A game is played with n fair coins starting with all coins showing tails. In each
round all coins that show tails are tossed; rounds continue until all coins show heads.
Let Xn be the number of rounds and Yn be the number of tosses. Find E(Yn) and
Var(Yn) for all values of n.
round all coins that show tails are tossed; rounds continue until all coins show heads.
Let Xn be the number of rounds and Yn be the number of tosses. Find E(Yn) and
Var(Yn) for all values of n.