After a number of complaints about its directory assistance, a telephone company examined samples of calls to determine the frequency of wrong numbers given to callers. Each sample consisted of 100 calls. The manager stated that the error rate is about 3 percent. Construct a control chart using 99 percent limits and using p=.03 . (Round the final answers to 3 decimal places.)

Observation 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Number of errors 8 4 4 6 4 7 6 8 7 5 4 7 3 3 5 3

UCL LCL Control Limits

a-2. Based on the manager's assumption of the process error rate, is the process in control?

multiple choice Yes No