數統.....probability
2007-02-21 9:25 am
Suppose there are a village which have 2% citizen who have AIDS and there are a system which is used to check the citizen who have AIDS or not.The result of check have 5% possible error.A man had been checked and his checked report show that he is a carrier. Find the probability of the man who doesn't has AIDS.
回答 (1)
2007-02-21 9:45 am
✔ 最佳答案
This is a typical question of Baye's Law.P(The man does not have AIDS | Checking is positive)
=P(The man does not have AIDS and Checking is positive) / P(Checking is positive)
= 0.98 x 0.05 / (0.98 x 0.05 + 0.02 x 0.95)
收錄日期: 2021-04-12 21:22:32
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070221000051KK00410