作者chrisjon (研究布丁狗)
看板Statistics
标题Re: [问题] 请问统计问题
时间Sat Jan 6 16:39:38 2007
※ 引述《ENatalie (为什麽一定要长大)》之铭言:
: 这是在问什麽,还有该如何解呢?
: Let D1,D2,D3 be three four-sideddice whose sides have been labeled as follows:
: D1:0333 D2:2225 D3:1146
: These side are rolled at random. Let A,B,and C be the events that the outcome
: on die D1 is larger than the outcome on D2, the outcome on D2 is larger than
: the outcome on D3, and the outcome on D3 is large than the outcome on D1,
: respectively. Show that (a) P(A) =9/16, (b) P(B) = 9/16, (c) P(C) =10/16.
: Do you find it interesting that each of the probabilities that D1 "beats"
: D2,D2 "beats" D3, and that D3 "beats" D1 is greater than 1/2 ?
: Thus it is difficult to determine the "best" die.
: 谢谢~
D1 D2 D3 分别是三个四面骰,四个面的点数分别为D1:0333 D2:2225 D3:1146
令A,B,C事件分别是骰出来的点数D1>D2、D2>D3、D3>D1
证明(a)P(A) = 9/16, (b) P(B) = 9/16, (c) P(C) = 10/16
查了一下beats是打败的意思,後面那段话好像没作用…
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棒球队棒球队的坚强阵容
谁在一垒,什麽在二垒,三垒我不知道
今天当补手,明天在投球
为什麽在左外野,因为他在中外野
我不管啦是游击手,天啊他是裁判
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