Question: Chapter 17 41. Tri-State Bank is investigating the processing time for loan applications. Samples were taken for 25 random days from four branches. These data
Chapter 17
41. Tri-State Bank is investigating the processing time for loan applications. Samples were taken for 25 random days from four branches. These data can be found in the worksheet C17 Excel P41 Data in MindTap. Construct control charts using the Excel template xBar&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? What might cause the R-chart variability, for example, has longer processing times, and the differences should be investigated?
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