What is the distribution of the number of positive tests

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False-positives in testing for HIV. A rapid test for the presence in blood of antibodies to HIV gives a positive result with probability about 0.004 when a person who is free of HIV antibodies is tested. A clinic tests 1000 people who are all free of HIV antibodies.

A. What is the distribution of the number of positive tests?

B. What is the mean number of positive tests?

Reference no: EM13609769

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