Refer to the sample data for pre-employment drug screening shown below. If one o

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

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