# Math help?

A certain disease has an incidence rate of 0.2%. If the false negative rate is 5% and the false positive rate is 1%, compute the probability that a person who tests positive actually has the disease.

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- AmyLv 78 months ago
In a population of 1 million people:

- How many have the disease?

- - How many of them test positive?

- How many people do not have the disease?

- - How many of them test positive?

What fraction of the people who test positive actually have the disease?

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