Joe studied his control chart and noticed it had been built with repeated samples of ten units
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Question:
Joe studied his control chart and noticed it had been built with repeated samples of ten units and three-sigma limits that were UCL = 109.0125 and LCL = 90.9875. What is the process standard deviation?
A)9.5
B)6.7
C)5.2
D)3
Related Book For
Managerial accounting
ISBN: b010ikdqzm
10th Edition
Authors: Carl S. Warren, James M. Reeve, Jonathan E. Duchac
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