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11. Pregnancy Test: A pregnancy testing device is used by 1000 different women from a population of women who think they might be pregnant. The results are depicted in the contingency table below. Here, a positive test result means pregnancy is detected. Was the woman actually pregnant? Yes No positive test result 479 13 negative test result 6 502 '3' (a) Using the relative frequency approximation of probabilities, what is the probability that the device is correct? El (b) Suppose you are a woman about to take the test. Prior to taking the test, what is the probability of a falsepositive? (c) uppose you are a woman who takes the test and it comes back positive. Now, what is the probability that the test result is wrong? (d) Comment on the difference between your answer to part (b) and your answer to part (c)