The records at the emergency rooms of five hospitals over a certain period of time were examined. Each patient was classified as either being "admitted to the hospital" or as "returned home." as given in DS 10.6.10.
(a) Is there any evidence to support the claim that the hospital admission rates differ between the five hospitals.'
(b) Consider hospitals 3 and 4. Calculate a 95% two-sided confidence interval for the difference between the admission rates of these two hospitals.
(e) Consider hospital I. Is there sufficient evidence to conclude that the admission rate for this hospital is larger than 10%?