An athlete has tested positive for steroids. A false positive means the test was positive,...

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An athlete has tested positive for steroids. A false positive means the test was positive, but the athlete didnot use steroids. A true positive means the athlete tested positive and used steroids.What is the probability the athlete used steroids, given that 1% of athletes use steroids, the test's faisepositive rate is 0.5%, and the test's true positive rate is 99%?2.0%99.9%66.7%1.0%

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