Question: This was all the information given to solve the question. Processing new accounts at a bank is intended to average 10 minutes each. Five samples

This was all the information given to solve the question.

Processing new accounts at a bank is intended to average 10 minutes each. Five samples of four observations each have been taken. Use the sample data in conjunction with Table 10.2 to construct upper and lower control limits for both a mean chart and a range chart. Do the results suggest that the process is in control? (HINT: check both the x-bar chart and R-bar chart. Use n = 4, Az = 0.73, D4 = 2.28, and D3 = 0.) Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 10.2 10.3 9.7 9.9 9.8 9.9 9.8 9.9 10.3 10.2 9.8 9.9 9.9 10.3 10.1 10.4 10.1 10.5 9.7 40.0 40.4 39.6 40.0 10.1 Totals 40.8 True O False

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