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** S6.25 The accounts receivable department at Rick Wing Manufacturing has been having difficulty getting customers to pay the füll amount of their bills. Many customers complain that the Ous are not correct and do not reflect the materials that arrived at their receiving docks. The department has decided to implement en its billing process. To set up control charts, 10 samples of 50 us cach were taken over a month's time and the items on the bills checked against the bill of lading sent by the company's shipping department to determine the number of bills that were not correct. The results were: Sample No. No. of Incorrect Bills Sample No. No. of Incorrect Bills 3) 5. 11 4 0. 3. 7. 2. 10 Determine the value of p-bar, the mean fraction defective. Then getermine the control limits for the p-chart using a 99.73% con- adence level (3 standard deviations). Is this process in control? I not, which sample(s) were out of control? How might you use the quality tools discussed in Chapter 6 to ermine the source of the billing defects and where you might| improvement efforts to eliminate the causes? 5m4 72 67899

** S6.25 The accounts receivable department at Rick Wing Manufacturing has been having difficulty getting customers to pay the füll amount of their bills. Many customers complain that the Ous are not correct and do not reflect the materials that arrived at their receiving docks. The department has decided to implement en its billing process. To set up control charts, 10 samples of 50 us cach were taken over a month's time and the items on the bills checked against the bill of lading sent by the company's shipping department to determine the number of bills that were not correct. The results were: Sample No. No. of Incorrect Bills Sample No. No. of Incorrect Bills 3) 5. 11 4 0. 3. 7. 2. 10 Determine the value of p-bar, the mean fraction defective. Then getermine the control limits for the p-chart using a 99.73% con- adence level (3 standard deviations). Is this process in control? I not, which sample(s) were out of control? How might you use the quality tools discussed in Chapter 6 to ermine the source of the billing defects and where you might| improvement efforts to eliminate the causes? 5m4 72 67899

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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a.) Determine the value of p-bar, the mean fraction defective. Then determine control limits for the p-chart using a 99.73% confidence level (3 standard deviations). Is this process in control? If not, which sample(s) were out of control?

b.) How might you use the quality tools discussed in chapter 6 to determine the source of the billing defects and where you might start your improvement efforts to eliminate the causes?

** S6.25 The accounts receivable department at Rick Wing Manufacturing has been having difficulty getting customers to pay the füll amount of their bills. Many customers complain that the ois are not correct and do not reflect the materials that arrived at their receiving docks. The department has decided to implement eh its billing process. To set up control charts, 10 samples of 50 us cach were taken over a month's time and the items on the bills checked against the bill of lading sent by the company's shipping department to determine the number of bills that were not correct. The results were: Sample No. No. of Incorrect Bills Sample No. No. of Incorrect Bills 9. 3) 5. 11 4 0. 7. 21 10 Determine the value of p-bar, the mean fraction defective. Then getermine the control limits for the p-chart using a 99.73% con- adence level (3 standard deviations). Is this process in control? I not, which sample(s) were out of control? P How might you use the quality tools diseussed in Chapter o to ermine the source of the billing defects and where you might| your improvement efforts to eliminate the causes? 5m4 72 67899O
Transcribed Image Text:** S6.25 The accounts receivable department at Rick Wing Manufacturing has been having difficulty getting customers to pay the füll amount of their bills. Many customers complain that the ois are not correct and do not reflect the materials that arrived at their receiving docks. The department has decided to implement eh its billing process. To set up control charts, 10 samples of 50 us cach were taken over a month's time and the items on the bills checked against the bill of lading sent by the company's shipping department to determine the number of bills that were not correct. The results were: Sample No. No. of Incorrect Bills Sample No. No. of Incorrect Bills 9. 3) 5. 11 4 0. 7. 21 10 Determine the value of p-bar, the mean fraction defective. Then getermine the control limits for the p-chart using a 99.73% con- adence level (3 standard deviations). Is this process in control? I not, which sample(s) were out of control? P How might you use the quality tools diseussed in Chapter o to ermine the source of the billing defects and where you might| your improvement efforts to eliminate the causes? 5m4 72 67899O
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