作者angelforlove (幸福~*)
看板Statistics
标题[问题] 一题简单的机率问题~~拜托拜托~~急~~~
时间Wed Jan 17 17:43:16 2007
原文：
An interviewer is given a list of potential people she can interview,
If the interviewer needs to interview 5 people and if each person(independently
agrees to be interviewed with probability 2/3,what is the probability that
her list of potential people will enable her to obtain her necessary number
of interviews if the list consists of (a)5 people and (b)8 people? For
part (B)what is the probability that the interviewer will speak to exactly
(c)6 people and (d) 7 people on the list?
而其解答分别是
32/243 ， 4864/6561 ，160/729 ， 160/729
*[m我不懂c和d的部份
第一为什麽答案会是那样~~~
第二为什麽会一样~~~
拜托拜托~~可以教我一下吗~~~
感恩~~~
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1F：→ angelforlove:拜托喔~~大感恩~~可以的话回信给我~~感恩 01/17 17:55
2F：→ TOOYA:看到一堆英文就不想看下去 英文很烂 除了考试不想看英文题目 01/19 08:22