If 3 of the 1000 test subjects are randomly selected, find the probability that they all had false negative results. Is it unlikely to randomly select subjects and get 3 results that are all false negative results?

a. Assume that the 3 selections are made with replacement.
b. Assume that the 3 selections are made without replacement.

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Table 4-1 Pre-Employment Drug Screening Results Positive Test Result (Drug Use Is Indicated) Negative Test Result (Drug Use is Not Indicated) 6 (False Negative) 860 True Negative) Subject Uses Drugs (True Positive) 90 (False Positive) Subject ls Not a Drug User