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9. In an article on the SARS epidemic, the May 7, 2003 New York Times
discusses conflicting estimates of the disease’s incubation period (the average
time that elapses from infection to the first symptoms). “The study esti-
mated it to be 6.4 days. But other statistical calculations ... showed that the
incubation period could be as long as 14.22 days.” What’s wrong here.