Suppose two teams are playing a series of games, each of which is independently won by team A with probability p and by team B with probability 1-p. The winner of the series is the first team to win i games. 1).If i= 4,find the probability that a total of 7 games are played. Also show that this probability is maximized when p=1/2. 2).Find the expected number of games that are played when (a).i=2 , (b).i=3 谢谢帮忙!!! --

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