A major concern with long ER wait times is that patients may leave the ER without being seen, due to dissatisfaction with having to wait. Other hospitals in the region have patients leave the ER without being seen at a rate of 5%. You are interested to see if your rate is the same as those hospitals nearby. You collect a random sample of 1000 ER visitors. Of those 1000 visitors, 28 left without receiving any treatment. Construct a 95% confidence interval for the population proportion of ER patients that leave without receiving any treatment, . Interpret your findings with respect to the 5% figure in other area hospitals.