一條中五Probability題目
2011-04-21 7:04 am
圖片參考：http://imgcld.yimg.com/8/n/HA00130728/o/701104200141913873429320.jpg
ANS:
a) 0.32
b) 0.144
c) 0.0512
唔該列一列啲步驟
回答 (1)
2011-04-21 7:26 am
✔ 最佳答案
a)P(go to canteen)= [1 - P(go to library)] * 4 / (4+1)= (1 - 0.6) 4/5= 0.32b)P(E) = 0.6 * 0.6 * (1 - 0.6)= 0.144
c)P(go to sports centre on one day) = 1 - 0.6 - 0.32 or 0.32/4 = 0.08P(E)= P(Thursday go to sports centre , Friday go to canteen)
+ P(Thursday go to canteen , Friday go to sports centre)= 0.08 * 0.32 + 0.32 * 0.08= 0.0512
收錄日期: 2021-04-21 22:20:22
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20110420000051KK01419