Find sigma upper and lower control chart limits for process
Problem:
C&A wants to see if the accuracy of the prices that were entered into its database used for its cash registers is in control. C&A collects 5 weeks of data as shown below.
Week
Incorrect Price Entries
1
15
2
7
3
5
4
10
Required:
Question 1) The 3-sigma upper and lower control chart limits for this process would be
i) UCL = 9.4; LCL =0ii) UCL = 9.4; LCL = 1.9 iii) UCL = 18.6; LCL = 0.2iv) UCL = 18.6; LCL = 0v) cannot be determinde
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