Refer to the sample data for pre-employment drug screening shown below. If one o
ID: 3262681 • Letter: R
Question
Refer to the sample data for pre-employment drug screening shown below. If one of the subjects is randomly selected, what is the probability that the test result is a false positive? Who would suffer from a false positive result? Why?
Pre-Employment Drug Screening Results
Positive test result
Negative test result
Drug Use Is Indicated
Drug Use Is Not Indicated
Subject Uses Drugs
38
12
Subject Is Not a Drug User
18
34
Pre-Employment Drug Screening Results
Positive test result
Negative test result
Drug Use Is Indicated
Drug Use Is Not Indicated
Subject Uses Drugs
38
12
Subject Is Not a Drug User
18
34
Explanation / Answer
number of false positive = 18/(38+12+18+34)
= 17.65%
The person tested would suffer because he or she would be suspected of using drugswhen in reality he or she does not use drugs