Suppose that 0.9% of male professional golfers use steroids, and that Max is a male professional golfer who has been randomly se
lected to take a drug test. The test he has been asked to take has a false positive rate of 1% and a false negative rate of 10%.
1 answer:
Answer:
0.4490
Step-by-step explanation:
P(tested positive )=P(uses steroid and tested positive )+P(not uses steroid and tested positive )
=0.009*0.9+0.994*0.01=0.01804
Therefore:
Therefore P(uses steroid|tested positive )=P(tested positive & uses steroid)/P(tested positive )=0.009×0.9/0.01804=0.4490
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