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2. The accounts receivable department at IMJR manufacturing has been having difficulty getting customers to pay the full amount of their bills. Many customers complain that the bills are not correct and do not reflect the materials that arrived at their receiving docks. The department has decided to implement statistical process control (SPC) in its billing process. To set up control charts, 10 samples of 50 bills each were taken over a month 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. Number of Incorrect Bills Sample No. Number of Incorrect Bills 1 6. 6. 11 8 4 4 4 9 7 10 2 Determine the value of the p-bar, the mean fraction defective. Then determine the control limits for the p-chart using a 99.73% confidence level (3 standard deviations). Has this process been in control? If not, which samples were out of control? 2.

2. The accounts receivable department at IMJR manufacturing has been having difficulty getting customers to pay the full amount of their bills. Many customers complain that the bills are not correct and do not reflect the materials that arrived at their receiving docks. The department has decided to implement statistical process control (SPC) in its billing process. To set up control charts, 10 samples of 50 bills each were taken over a month 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. Number of Incorrect Bills Sample No. Number of Incorrect Bills 1 6. 6. 11 8 4 4 4 9 7 10 2 Determine the value of the p-bar, the mean fraction defective. Then determine the control limits for the p-chart using a 99.73% confidence level (3 standard deviations). Has this process been in control? If not, which samples were out of control? 2.

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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2. The accounts receivable department at IMJR manufacturing has been having difficulty getting customers to pay the full amount of their bills. Many customers complain that the bills are not correct and do not reflect the materials that arrived at their receiving docks. The department has decided to implement statistical process control (SPC) in its billing process. To set up control charts, 10 samples of 50 bills each were taken over a month 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. Number of Incorrect Bills Sample No. Number of Incorrect Bills 1 6. 6. 11 8 4 4 4 9 7 10 2 Determine the value of the p-bar, the mean fraction defective. Then determine the control limits for the p-chart using a 99.73% confidence level (3 standard deviations). Has this process been in control? If not, which samples were out of control? 2.
Transcribed Image Text:2. The accounts receivable department at IMJR manufacturing has been having difficulty getting customers to pay the full amount of their bills. Many customers complain that the bills are not correct and do not reflect the materials that arrived at their receiving docks. The department has decided to implement statistical process control (SPC) in its billing process. To set up control charts, 10 samples of 50 bills each were taken over a month 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. Number of Incorrect Bills Sample No. Number of Incorrect Bills 1 6. 6. 11 8 4 4 4 9 7 10 2 Determine the value of the p-bar, the mean fraction defective. Then determine the control limits for the p-chart using a 99.73% confidence level (3 standard deviations). Has this process been in control? If not, which samples were out of control? 2.
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