Answer the question + explain briefly
圖片參考：http://i707.photobucket.com/albums/ww74/stevieg90/ScreenHunter_08Jan181901.gif
(http://i707.photobucket.com/albums/ww74/stevieg90/ScreenHunter_08Jan181901.gif)
Basic Statistic 2
2011-01-19 3:02 am
回答 (1)
2011-01-19 9:43 pm
✔ 最佳答案
(a)Let S be the event that he will receive a ticket.
P(S) = (40%)(0.2) + (30%)(0.1) + (20%)(0.5) + (10%)(0.2)
= 0.23
(b)
P(L2|S) = P(L2 and S) / P(S)
= (30%)(0.1) / 0.23
= 0.03/0.23
= 3/23
收錄日期: 2021-04-22 00:59:38
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20110118000051KK00962