Loan Processing times are being monitored at a local company. Samples of ten observations each have been taken, and the results are listed. Using Factors from Table 10.2, determine lower and upper control limits for a a Range chart
Sample Number 1 2 3
------------- 63 65 60
------------- 61 64 75
------------- 72 58 79
------------- 69 63 64
------------- 74 63 64
------------- 74 54 67
------------- 66 61 66
------------- 75 74 66
------------- 79 72 76
------------- 69 59 60
2.09 , 41.325
4.18 , 33.82
53.842 , 80.29
0 , 48.83
None of the Above