Problem 20BSC
In Exercises, refer to Table, included with the Chapter Problem. In each case, assume that 1 of the 1000 test subjects is randomly selected.
False Negative Find the probability of selecting a subject with a negative test result, given that the subject uses drugs. Who would suffer from this type of error?
Table Pre-Employment Drug Screening Results
|
Positive Test Result (Drug Use Is Indicated) |
Negative Test Result (Drug Use Is Not Indicated) |
Subject Uses Drugs |
44 (True Positive) |
6 (False Negative) |
Subject Is Not a Drug User |
90 (False Positive) |
860 (True Negative) |
Solution 20BSC
= 0.12