Refer to the sample data for pre-employment drug screening shown below. If one o
ID: 3061441 • 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
47
77
Subject Is Not a Drug User
18
36
The probability of a false positive test result is__________(Round to three decimal places as needed.)
Who would suffer from a false positive result? Why?
A.The person tested would suffer because he or she would be suspected of using drugs when in reality he or she does not use drugs.
B.The person tested would suffer because he or she would not be suspected of using drugs when in reality he or she does use drugs.
C.The employer would suffer because the person tested would not be suspected of using drugs when in reality he or she does use drugs.
D.The employer would suffer because the person tested would be suspected of using drugs when in reality he or she does not use drugs.
Pre-Employment Drug Screening Results
Positive test result
Negative test result
Drug Use Is Indicated
Drug Use Is Not Indicated
Subject Uses Drugs
47
77
Subject Is Not a Drug User
18
36
The probability of a false positive test result is__________(Round to three decimal places as needed.)
Who would suffer from a false positive result? Why?
A.The person tested would suffer because he or she would be suspected of using drugs when in reality he or she does not use drugs.
B.The person tested would suffer because he or she would not be suspected of using drugs when in reality he or she does use drugs.
C.The employer would suffer because the person tested would not be suspected of using drugs when in reality he or she does use drugs.
D.The employer would suffer because the person tested would be suspected of using drugs when in reality he or she does not use drugs.
Explanation / Answer
The probability of a false positive test result is =18/178
=0.101
The probability of a false positive test result is 0.101
Who would suffer from a false positive result? Why?
Ans:The person tested would suffer because he or she would be suspected of using drugs when in reality he or she does not use drugs. (option A is correct)
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