1. A common blood test performed on pregnant women to screen for chromosome abnormalities in the fetus measures the human chorionic gonadotropin (hCG) hormone. Suppose that in a given population, 5% of fetuses have a chromosome abnormality. The test correctly produces a positive result for a fetus with a chromosome abnormality 96% of the time and correctly produces a negative result for a fetus without an abnormality 84% of the time. a. If you randomly select ve pregnant women from this population, what is the probability that at least one of them is carrying a fetus with a chromosome abnormality? (2pt) b. What proportion of women who are tested get a negative test result? (2p!) c. What proportion of women who get a positive test result are actually carrying a fetus with a chromosome abnormality? (2pt)