Question: Tri-State Bank is investigating the processing time for loan applications. Samples were taken for 25 random days from 4 branches. These data can be found
Tri-State Bank is investigating the processing time for loan applications. Samples were taken for 25 random days from 4 branches. These data can be found in the worksheet C16P5 in the OM5 Data Workbook. Construct control charts using the Excel template x-Bar & R-Chart. Verify the Excel calculations of the control limits by hand using the formulas in the chapter. Does the process appear to be in statistical control? Why or why not?
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