挺哥布置的作业2:

BreakDS posted @ Sun, 24 Aug 2008 18:40:39 +0800 in Uncategorized , 1033 readers

第六集:乒乓球比赛

小阳和小冬打比赛,规定53胜,每场球都是11分制,如果打到10平就要净胜两个才算赢。假设每球的输赢都是独立同分布事件,且小阳得分的概率为p。最终小阳获胜了,那么试问:

1.战斗局数的分布如何?

2.总共打了多少球的分布又如何?

3.前两问都是建立在小阳获胜的基础上,那么小冬获胜的概率又是多少?

答: 我笨笨,看到题的第一反应是,傻算。

写成pdf了,地址:

user_files/BreakDS/File/solve.pdf


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