a-1. After a number of complaints about its directory assistance, a telephone company frequency of wrong numbers given to callers. Each sample consisted of 100 calls. The manager stated that the error rate is about 4 percent. Construct a control chart using 95 percent limits and using P = .04. (Round the final answers to 3 decimal places.) Observation Number of errors Control Limits. 1 5 O Yes O No UCL a-2. Is the process in control? 2 3 3 5 LCL 4 7 5 4 6 6 7 8 8 4 9 5 10 11 9 3 12 4 13 5 14 6 15 6 16 7

a-1. After a number of complaints about its directory assistance, a telephone company frequency of wrong numbers given to callers. Each sample consisted of 100 calls. The manager stated that the error rate is about 4 percent. Construct a control chart using 95 percent limits and using P = .04. (Round the final answers to 3 decimal places.) Observation Number of errors Control Limits. 1 5 O Yes O No UCL a-2. Is the process in control? 2 3 3 5 LCL 4 7 5 4 6 6 7 8 8 4 9 5 10 11 9 3 12 4 13 5 14 6 15 6 16 7

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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