probability
2011-12-27 11:14 pm
圖片參考：http://imgcld.yimg.com/8/n/HA00167623/o/701112270045813873415750.jpg
圖片參考：http://imgcld.yimg.com/8/n/HA00167623/o/701112270045813873415761.jpg
explain them plz
回答 (1)
2011-12-27 11:36 pm
✔ 最佳答案
(a)(i) P(both pass) = 67/103 * 66/102
= 0.421
(ii) P(SSA| pass) = (22/67)(21/66) /0.421 = 0.248
(b)(i)
P(both pass)
= (1/3)[(22/36)(21/35) + (25/35)(24/34) + (20/32)(19/31)]
= 0.418
(ii) P(SSA | pass)
(1/3)(22/36)(21/35) / 0.418
= 0.292
收錄日期: 2021-04-26 14:56:30
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20111227000051KK00458