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Example 3.18 from Statistics, 3.3 Two Basic Rules of Probability
b. Given that the woman develops the disease, what is the probability that she tests negative?
Work it out on paper first. Then open the solution one step at a time, and stop as soon as you can finish on your own.
b. Among women who develop the disease, the test is negative 2 percent of the time, so P(N|B) = .02
How did it go?