Garcia's Garage desires to create some colorful charts and graphs to illustrate how reliably its mechanics "get under the hood and fix the problem." The historic average for the proportion of customers that return for the same repair within the 30-day warranty period is 0.08. Each month, Garcia tracks 120 customers to see whether they return for warranty repairs. The results are plotted as a proportion to report progress toward the goal. If the control limits are to be set at two standard deviations on either side of the goal, determine the control limits for this chart. In March, 15 of the 120 customers in the sample group returned for warranty repairs. Is the repair process in control? an The UCL, equals and the LCL, equals (Enter your responses rounded to three decimal places.) e
Garcia's Garage desires to create some colorful charts and graphs to illustrate how reliably its mechanics "get under the hood and fix the problem." The historic average for the proportion of customers that return for the same repair within the 30-day warranty period is 0.08. Each month, Garcia tracks 120 customers to see whether they return for warranty repairs. The results are plotted as a proportion to report progress toward the goal. If the control limits are to be set at two standard deviations on either side of the goal, determine the control limits for this chart. In March, 15 of the 120 customers in the sample group returned for warranty repairs. Is the repair process in control? an The UCL, equals and the LCL, equals (Enter your responses rounded to three decimal places.) e
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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Garcia's Garage desires to create some colorful charts and graphs to illustrate how reliably its mechanics "get under the hood and fix the problem." The historic average for the proportion of customers that return for the same repair within the 30-day warranty period is 0.08. Each month, Garcia tracks 120 customers to see whether they return for warranty repairs. The results are plotted as a proportion to report progress toward the goal. If the control limits are to be set at two standard deviations on either side of the goal, determine the control limits for this chart. In March, 15 of the 120 customers in the sample group returned for warranty repairs. Is the repair process in control?
Transcribed Image Text:Garcia's Garage desires to create some colorful charts and graphs to illustrate how reliably its mechanics "get under the hood and fix the problem." The historic
average for the proportion of customers that return for the same repair within the 30-day warranty period is 0.08. Each month, Garcia tracks 120 customers to see
whether they return for warranty repairs. The results are plotted as a proportion to report progress toward the goal. If the control limits are to be set at two
standard deviations on either side of the goal, determine the control limits for this chart. In March, 15 of the 120 customers in the sample group returned for
warranty repairs. Is the repair process in control?
an
The UCL, equals and the LCL, equals (Enter your responses rounded to three decimal places.)
e
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