The data in Table 5E.12 are the times it takes for a local payroll company to process
Question:
The data in Table 5E.12 are the times it takes for a local payroll company to process checks (in minutes). The target value for the turnaround times is 
minutes (two working days).
a. Estimate the process standard deviation.
b. Create a CUSUM chart for this process, using standardized values 
and
. Interpret this chart.
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Step by Step Answer:
a Construct a Moving Range chart to find and estimate standard deviation MTB Stat ...View the full answer
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Related Book For 
Managing Controlling and Improving Quality
ISBN: 978-0471697916
1st edition
Authors: Douglas C. Montgomery, Cheryl L. Jennings, Michele E. Pfund
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