Odds makers try to predict which football team will win and by how much( the spread).If they are correct,adding the spre
问题描述：
Odds makers try to predict which football team will win and by how much( the spread).If they are correct,adding the spread to the loser's score would produce a tie.Suppose you can win $6 for every dollar you bet if you can predict the winner of three consecutive games.What is your expected value for this bet?
答
6*1/8-1*7/8
=-1/8
成功获得的钱乘以成功的概率-失败的钱乘以失败的概率.
概率建立在一支对赢一场的概率是1/2,而且每场比赛是独立事件的基础上.
不是很确定,若不对请告诉我一下.