Mathematics, 30.07.2019 02:20 yasarhan2
Police often set up sobriety checkpointslong dashroadblocks where drivers are asked a few brief questions to allow the officer to judge whether or not the person may have been drinking. if the officer does not suspect a problem, drivers are released to go on their way. otherwise, drivers are detained for a breathalyzer test that will determine whether or not they will be arrested. the police say that based on the brief initial stop, trained officers can make the right decision 74% of the time. suppose the police operate a sobriety checkpoint after 9: 00 p. m. on a saturday night, a time when traffic safety experts suspect that about 10% of drivers have been drinking. complete parts a) through d) below. a) you are stopped at the checkpoint and, of course, have not been drinking. what's the probability that you are detained for further testing?
b) what's the probability that any given driver will be detained?
c) what's the probability that a driver who is detained has actually been drinking?
d) what's the probability that a driver who was released had actually been drinking?
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Police often set up sobriety checkpointslong dashroadblocks where drivers are asked a few brief ques...
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