Question
A study considered risk factors for HIV infection among intravenous drug users. It found that 40% of users who reported more than 100 injections per
A study considered risk factors for HIV infection among intravenous drug users. It found that 40% of users who reported more than 100 injections per month (heavy users) were HIV positive. a. What is probability that exactly 2 of 5 users are HIV positive? b. What is probability that 2 or fewer of 5 users are HIV positive? c. What is probability that 3 or more of 5 users are HIV positive?
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Mathematical Excursions
Authors: Richard N Aufmann, , Joanne Lockwood, Richard D Nation, Daniel K Clegg
3rd Edition
1305161793, 9781305161795
