g researchers are concerned about the rising prevalence of caesarian section undergone by pregnant women across the country. suppose that national statistics assume that only 32.7% of women undergo the risky procedure due to medical complications. in a sample of 16 expecting mothers, 7 reported undergoing a caesarian. a) can researchers continue their investigation assuming an approximation to the normal distribution is possible? b) calculate the probability of observing the results seen in the sample conducted by the researchers.