作者angelforlove (幸福~*)
看板Statistics
標題[問題] 一題簡單的機率問題~~拜託拜託~~急~~~
時間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?
而其解答分別是
32/243 ， 4864/6561 ，160/729 ， 160/729
*[m我不懂c和d的部份
第一為什麼答案會是那樣~~~
第二為什麼會一樣~~~
拜託拜託~~可以教我一下嗎~~~
感恩~~~
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1F：→ angelforlove:拜託喔~~大感恩~~可以的話回信給我~~感恩 01/17 17:55
2F：→ TOOYA:看到一堆英文就不想看下去 英文很爛 除了考試不想看英文題目 01/19 08:22