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答案 :
a) 1/80
b) 79/128
急! F5 Probability 1條 Q1
2012-11-10 6:57 am
回答 (2)
2012-11-10 7:22 am
✔ 最佳答案
Given that5 gift prizes given at 1st round.
8 cash prizes given at 2nd round, where those employees who have received a gift are excluded.
16.
(a)
P(no cash prize chance)
= P(received gift prize)
= 5/400
= 1/80
(b)
P(cash prize chance)
= 1 - P(no cash prize chance)
= 1 - 1/80
= 79/80
P($50 prize)
= (79/80)(5/8)
= 395/640
= 79/128
參考: 自己
2012-11-10 9:58 pm
16.
(a)
P(no cash prize chance)
= P(received gift prize)
= 5/400
= 1/80
(b)
P(cash prize chance)
= 1 - P(no cash prize chance)
= 1 - 1/80
= 79/80
P($50 prize)
= (79/80)(5/8)
= 395/640
= 79/128
(a)
P(no cash prize chance)
= P(received gift prize)
= 5/400
= 1/80
(b)
P(cash prize chance)
= 1 - P(no cash prize chance)
= 1 - 1/80
= 79/80
P($50 prize)
= (79/80)(5/8)
= 395/640
= 79/128
收錄日期: 2021-04-13 19:05:42
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20121109000051KK00653