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Mathematics, 16.10.2019 04:30 glstephens04

100,000 random people were tested for condition a. roberto's doctor told him he tested positive for condition a. if the test is 99% accurate and condition a is rareā€”one out of every thousand people have it. what is the probability that testing positive means roberto has condition a?

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99.0%
1%
9%
99.9%

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