Only answer question 23 and show work

DL Positive Test Result Negative Test Result (Test shows drug use.) (Test shows no drug use.) Subject Uses Drugs 45 5 (True Positive) (False Negative) Subject Does Not Use Drugs 25 480 (False Positive) (True Negative) 21. Drug Testing Job Applicants Find the probability of selecting someone who got a result that is a false negative. Who would suffer from a false negative result? Why? 22. Drug Testing Job Applicants Find the probability of selecting someone who got a result that is a false positive. Who would suffer from a false positive result? Why? 23. Drug Testing Job Applicants Find the probability of selecting someone who uses drugs. Does the result appear to be reasonable as an estimate of the "prevalence rate" described in the Chapter