with data from the 2009 national health interview survey, the centers for disease control estimated that 9.4% of u.s. children had asthma. suppose that 12% of a random sample of 500 u.s. poor children have asthma. we used the estimate from the 2009 national health interview survey to calculate a standard error of 0.013. the data allows the use of a normal model. so we can find an approximate 95% confidence interval for the percentage of all u.s. poor children who have asthma. which interval is the approximate 95% confidence interval?