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2. A study considered risk factors for HIV infection among intravenous drug users. It found that 20% of users who had 100 injections per month
2. A study considered risk factors for HIV infection among intravenous drug users. It found that 20% of users who had 100 injections per month (light users) were HIV positive.
- What is the probability that exactly 4 out of 10 light users are HIV positive?
- What is the probability that at least 4 out of 10 light users are HIV positive?
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Trigonometry A Unit Circle Approach
Authors: Michael Sullivan
10th Edition
0321999347, 9780321999344
