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False positives. A rapid screening test for HIV has a false...

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False positives. A rapid screening test for HIV has a false...

False positives. A rapid screening test for HIV has a false positive rate of 0.5%. This means that the probability of a false positive test is 0.005. If the test is used in 500 HIV-free individuals, what is the expected number of false positives in the sample? In addition, what is the probability of encountering no false positives in the sample?

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