一场篮球比赛到了最后5分钟,甲队比乙队少得5分。如果甲队全投3分

一场篮球比赛到了最后5分钟,甲队比乙队少得5分。如果甲队全投3分球,则有8次投篮机会。如果甲队全投2分球,则有3次投篮机会。假设甲队队员投3分球的命中率均为0.6,投2分球的命中率均为0 .8,并且甲队加强防守,不给乙队投篮机会问全投3分球与全投2分球这两种方案中选择哪一种甲队获胜的概率较大?

答案

解析:要使甲队获胜,甲队至少投中23分球,或32分球,(4分)甲队全投3分球至少投中2个球的概率为.7分)甲队全投2分球至少投中3个的概率为.10分)所以选择全投3分球甲队获胜的概率较大13分)  

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