2. A medical insurance company is analyzing the promptness of its claims department in responding to customer claims. The company has a policy of processing all claims received within ve days. In order to determine how well the organization is doing, data were gathered to determine the proportion of time the claims were mailed late. A total of 25 sets of 100 samples each were made from which the proportion of claims that were mailed within the ve-day limit was determined. (10 points) Number null-mun \"III-I.\" a) Determine the upper and lower control limits. b) Draw the control chart. c) Do the data indicate a process is in control? Why or why not? \f