Administering new bank accounts is intended to average 15 minutes each. Five samples of four observations each have been taken. Use the sample data in concurrence with Table 2.3 to create upper and lower control limits for both a mean chart and a range chart. Do results propose that the procedure is in control?   Sample 1 Sample 2 Sample 3 Sample 4 Sample 5   11.2 11.3 10.7 10.9 10.8   10.9 10.8 10.9 11.3 11.2   10.8 10.9 10.9 11.1 11.3   11.1 11.4 11.1 11.5 10.7 Total: 44 44.4 43.6 44.8 44

Administering new bank accounts is intended to average 15 minutes each. Five samples of four observations each have been taken. Use the sample data in concurrence with Table 2.3 to create upper and lower control limits for both a mean chart and a range chart. Do results propose that the procedure is in control?