Suppose we have a group of 10 light users and 10 heavy users. What is the probability
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Suppose we have a group of 10 light users and 10 heavy users. What is the probability that exactly 3 of the 20 users are HIV positive?
Infectious Disease
A study considered risk factors for HIV infection among intravenous drug users [11]. It found that 40% of users who had ≤ 100 injections per month (light users) and 55% of users who had > 100 injections per month (heavy users) were HIV positive.
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Let X number of light users who are HIV positive Y numb...View the full answer
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