5. To supplement their patient satisfaction survey, End Result Hospital conducts in-depth telephone interviews of past patients. The interviews are based on a 1% sample of the completed surveys from the prior month. The sample varies widely due to diff erences in monthly admissions, the rate at which surveys are completed, and the willingness of patients to participate in the telephone interview. The Chapter 08.xls, Problem 08–05 tab records the total number of the patients’ concerns noted by the interviewers. These concerns range from the eff ectiveness of medical treatment to the cleanliness and comfort of the patient room and ease of parking. The interviewer addresses the same items found on the patient satisfaction survey, solicits additional information for any item on which the patient indicated performance was less than “Good” or “Very Good,” and provides the patient with the opportunity to voice any other concerns. Create a control chart to summarize the results. Are patient concerns stable?