Mathematics, 05.03.2021 19:30 dixonkaleo9
At a college campus, random drug tests are carried out to prevent use of prohibited drugs by athletes. Of all the athletes on campus, it is known that 8% use prohibited drugs regularly, 17% use it occasionally; and 75% never use it. The tests which are conducted do not always result in correct diagnosis. Regular prohibited drug users falsely test negative 5% of the time; occasional users falsely test negative 13% of the time; and non-users falsely test positive 11% of the time.
Compute the following:
A. If an athlete is selected at random, what is the probability that athlete will test positive for prohibited drug use?
B. If an athlete tests positive after a drug test, what is the probability that this drug user never used the prohibited drug?
Answers: 3
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