Houston North Hospital is trying to improve its image by providing a positive experience for its patients and their relatives. Part of the "image" program involves providing tasty, inviting patient meals that are also healthful. A questionnaire accompanies each meal served, asking the patient, among otherthings, whether he or she is satisfied or unsatisfied with the meal. A 150-patient sample of the survey results over the past 7 days yielded the following data:
Day No. of Unsatisfied Patients
1 22
2 20
3 6
4 15
5 10
6 26
7 17
The control limits to include 99.73% of the random variation in meal satisfaction are:
UCL: ____
LCL: _____
Based on the developed control limits, the number of unsatisfied patients has been: In control or out of control?