Q. Telephone inquiries of 100 IRS customers are monitored daily at random. Incidents of incorrect information or other non-conformities (as impoliteness to customers) are recorded. The data for the last week follows: Day # of Non-conformities 1 2 3 4 5 5 10 23 20 15 Construct a 3 standard deviation c chart of non-conformities. Elucidate what the control chart tells you about the IRS telephone operators