5
A population consists of 15 items, 10 of them are acceptable. In a sample of 4 items is
drawn without replacement, what is the probability that exactly 3 are acceptable?
英文概率(5分)
2006-12-13 8:14 am
回答 (2)
2006-12-13 8:58 am
✔ 最佳答案
Using hypergeometric distributionprobability
=[10C3*5C1]/[15C4]
=600/1365
=0.43956
2006-12-13 10:39 am
10/15*9/14*8/13*5/12<---UNaCCEPT
3600/32760*4 probability
40/91
3600/32760*4 probability
40/91
收錄日期: 2021-04-25 16:52:43
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20061213000051KK00072