A random sample of 487 nonsmoking women of normal weight (body mass index between 19.8 and 26.0) who had given birth at a large metropolitan medical center was selected. It was determined that 7.2% of these births resulted in children of low birth weight (less than 2500 g). Calculate a confidence interval (CI) using a confidence level of 99% for the proportion of all such births that result in children of low birth weight. [8]
