A printing company has a machine that folds brochures for mailing. Sometimes the machine can have...
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A printing company has a machine that folds brochures for mailing. Sometimes the machine can have problems that cause it to do improper folds. To monitor this process, the company selects a sample of 50 brochures from every order and counts the number of incorrectly folded items in each sample. The data are found below. Complete parts a through d. Click the icon to view the data. a. What is the appropriate control chart to use to monitor this process? O A. An R-chart B. Both an R-chart and an x-chart C. A p-chart O D. A c-chart O E. An x-chart b. Use the data to construct the appropriate control chart. Which graph below shows the appropriate chart for the data? A. O B. 0.2- 0.1- MW 0 10 20 0.2- 0.1- 0 10 20 C. 0.2- 0.1- MM 0 10 20 D. 0.2 0.1- 0 10 20 c. Suppose that for the next three orders, sample sizes of 50 brochures are examined with sample 21 having 8 bad folds, sample 22 having 10 bad folds, and sample 23 having 9 bad folds. Plot the additional data to the existing control chart and determine whether any of the control chart signals are present. Is the process in control? A. Since several points are above the upper control limit, the process was never in control. B. With the 3 new points, 9 points in a row are above the centerline, which indicates that the process has gone out of control. C. Since the 3 new points are outside the control limits, the process has gone out of control. D. With the 3 new points, 6 points in a row are decreasing, which indicates that the process has gone out of control. E. Since all of the points are between the control limits, the process is in control. d. Suppose that the next sample of 50 after the three from part c has 11 improperly folded brochures. What conclusions should be based on the control chart? A. Since the new point is outside the control limits, the process is still in control. B. With the new point, at least 9 points in a row are above the centerline, which indicates that the process has gone out of control. C. Since the new point is also outside the control limits, the process is still out of control. D. With the new point, at least 6 points in a row are decreasing, which indicates that the process has gone out of control. Data Sample 1 Number of Improper Folds 2 23 3 4 5 6 7 8 9 3 3 2 333254341 3 10 0 11 2 12 0 13 1 14 3 15 1 16 5 17 18 19 2457 20 1 Print Done - A printing company has a machine that folds brochures for mailing. Sometimes the machine can have problems that cause it to do improper folds. To monitor this process, the company selects a sample of 50 brochures from every order and counts the number of incorrectly folded items in each sample. The data are found below. Complete parts a through d. Click the icon to view the data. a. What is the appropriate control chart to use to monitor this process? O A. An R-chart B. Both an R-chart and an x-chart C. A p-chart O D. A c-chart O E. An x-chart b. Use the data to construct the appropriate control chart. Which graph below shows the appropriate chart for the data? A. O B. 0.2- 0.1- MW 0 10 20 0.2- 0.1- 0 10 20 C. 0.2- 0.1- MM 0 10 20 D. 0.2 0.1- 0 10 20 c. Suppose that for the next three orders, sample sizes of 50 brochures are examined with sample 21 having 8 bad folds, sample 22 having 10 bad folds, and sample 23 having 9 bad folds. Plot the additional data to the existing control chart and determine whether any of the control chart signals are present. Is the process in control? A. Since several points are above the upper control limit, the process was never in control. B. With the 3 new points, 9 points in a row are above the centerline, which indicates that the process has gone out of control. C. Since the 3 new points are outside the control limits, the process has gone out of control. D. With the 3 new points, 6 points in a row are decreasing, which indicates that the process has gone out of control. E. Since all of the points are between the control limits, the process is in control. d. Suppose that the next sample of 50 after the three from part c has 11 improperly folded brochures. What conclusions should be based on the control chart? A. Since the new point is outside the control limits, the process is still in control. B. With the new point, at least 9 points in a row are above the centerline, which indicates that the process has gone out of control. C. Since the new point is also outside the control limits, the process is still out of control. D. With the new point, at least 6 points in a row are decreasing, which indicates that the process has gone out of control. Data Sample 1 Number of Improper Folds 2 23 3 4 5 6 7 8 9 3 3 2 333254341 3 10 0 11 2 12 0 13 1 14 3 15 1 16 5 17 18 19 2457 20 1 Print Done -
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Business Statistics A Decision Making Approach
ISBN: 9780133021844
9th Edition
Authors: David F. Groebner, Patrick W. Shannon, Phillip C. Fry
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