Mathematics, 22.07.2021 01:00 kaiyah2021
A certain virus infects one in every 300 people. A test used to detect the virus in a person is positive 85% of the time if the person has the virus and 5% of the time if the person does not have the virus. (This 5% result is called a false positive.) Let A be the event "the person is infected" and B be the event "the person tests positive". a) Find the probability that a person has the virus given that they have tested positive, i. e. find P(A/B). Round your answer to the nearest tenth of a percent and do not include a percent sign. P( AB)= % b) Find the probability that a person does not have the virus given that they test negative, i. e. find P(A' B'). Round your answer to the nearest tenth of a percent and do not include a percent sign. P(A'B') = %
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