7/8

来源: xiaoxing 2013-01-04 17:19:40 [] [博客] [旧帖] [给我悄悄话] 本文已被阅读: 0 次 (0 bytes)
本文内容已被 [ xiaoxing ] 在 2013-01-04 20:12:19 编辑过。如有问题,请报告版主或论坛管理删除.
回答: 问一个概率的问题。谢谢。双手互搏2013-01-04 17:10:28

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回复:7/8 -朱哥靓- 给 朱哥靓 发送悄悄话 朱哥靓 的博客首页 (47 bytes) () 01/04/2013 postreply 17:21:16

从连赢前两局应该可以推理出甲方的赢率大于或等于1/2. -双手互搏- 给 双手互搏 发送悄悄话 双手互搏 的博客首页 (0 bytes) () 01/04/2013 postreply 17:23:23

Well, 3 trials is not enough to get that conclusion, you have to -xiaoxing- 给 xiaoxing 发送悄悄话 xiaoxing 的博客首页 (0 bytes) () 01/04/2013 postreply 17:26:47

You have to assume that else it is not solvable -xiaoxing- 给 xiaoxing 发送悄悄话 xiaoxing 的博客首页 (0 bytes) () 01/04/2013 postreply 17:25:09

it is solvable if it is given -朱哥靓- 给 朱哥靓 发送悄悄话 朱哥靓 的博客首页 (29 bytes) () 01/04/2013 postreply 17:29:36

Hehe, sure, it can be a number other than 1/2, -xiaoxing- 给 xiaoxing 发送悄悄话 xiaoxing 的博客首页 (0 bytes) () 01/04/2013 postreply 17:31:48

But when nothing is known 1/2 is a fair assumption -xiaoxing- 给 xiaoxing 发送悄悄话 xiaoxing 的博客首页 (0 bytes) () 01/04/2013 postreply 17:32:38

You know the guy win twice straight -朱哥靓- 给 朱哥靓 发送悄悄话 朱哥靓 的博客首页 (93 bytes) () 01/04/2013 postreply 17:42:19

When you flip a coin, you may get 3 heads up in a row, -xiaoxing- 给 xiaoxing 发送悄悄话 xiaoxing 的博客首页 (120 bytes) () 01/04/2013 postreply 17:46:44

Again, u assume it's a fair coin -朱哥靓- 给 朱哥靓 发送悄悄话 朱哥靓 的博客首页 (0 bytes) () 01/04/2013 postreply 17:51:54

the question is if you observe two heads in a row, -stockganster- 给 stockganster 发送悄悄话 (83 bytes) () 01/04/2013 postreply 18:39:48

think this way -朱哥靓- 给 朱哥靓 发送悄悄话 朱哥靓 的博客首页 (268 bytes) () 01/04/2013 postreply 18:48:12

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