Problem 7 of Chapter 10. The postmaster of a small western town receives a certain number of complaints each day about mail delivery. Determine three sigma control limits using the following data. Day Number of Complaints 1 2 3 4 5 6 7 8 9 10 11 12 13 14 4 10 14 8 9 6 5 12 13 7 6 4 2 10 What is the Upper Control Limit (UCL) of the control chart? (Please keep two digits after the decimal point.) QUESTION 13 Problem 7 of Chapter 10. The postmaster of a small western town receives a certain number of complaints each day about mail delivery. Determine three sigma control limits using the following data Day Number of Complaints 8 9 10 11 10 14 896 5 12 13 7 6 2 10. What is the Lower Control Limit (LCL) of the control chart? (Please keep two digits after the decimal point.)