Reler to the sample data for pre-employment drug screening shown below. If one o
ID: 3366704 • Letter: R
Question
Reler 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 faise positive? Who would suffer from a faioe positive resu? Why? Drug Screening Results Positive test result Negative tost result Drug Use Is Indicated Drug Use Iis Not Indicated Subject Uses Drugs Subject is Not a Drug User 43 17 The probability of a false positive test result is (Round to three decimal places as needed.) Who would suffer from a false posilive result? Why? O A The employer would suffer because the person tested would not be suspected of using drugs when in reality he or she does use drugs O B. The person tested would suffer because he or she would be suspected of using drugs when in reality he or she does not use dnugs O C. The employer would suffer because the person tested wouild be suspected of using drugs when in reality he or she does not use drugs O D. The person tested would suffer because he or she would not be suspected of using drugs when in reality he or she does use ahugs Cick to seiect your answers). 5 7 8 9Explanation / Answer
(a)
Positive test result Negative test result Total
Drug use is indicated Drug use is not indicatd
Suject uses drugs 43 8 51
Suject is not a drug user 17 33 50
Total 60 41 101
Probability of false positive test result = P(Positive Test Result & Subject is not a drug user) = 17/101 = 0.1683
(b)
Correct option:|B. The persin tested would suffer because he or she would be suspected of using drugs when in reality he or she does not use drugs.
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