a study would lije to investigate the risk of lung disease in an urban area. p1= urban residents w/ lung diseases p2= rural residents w/ lung diseases a study randomly surveyed 200 urban adults and 150 rural adults and found that 30 of 200 urban adults and 15 of 150 rural adults had lung diseases. find 95% confidence interval of p1-p2. based on confidence level could you conclude p1 greater than p2