A certain airplane model is susceptible to alignment errors in the manufacturing process. To monitor this process,
Question:
A certain airplane model is susceptible to alignment errors in the manufacturing process. To monitor this process, the total number of alignment errors observed at final inspection for each of the first 25 aircraft produced were recorded, as shown in the table, right column.
a. Construct a c-chart for the number of alignment errors per aircraft.
b. Locate the center and upper and lower control limits on the c-chart.
c. Does the process appear to be in control? Would you recommend using these control limits for future data?
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Arpan Sarkar
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Related Book For 
Statistics For Engineering And The Sciences
ISBN: 9781498728850
6th Edition
Authors: William M. Mendenhall, Terry L. Sincich
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