1. Loan Processing times are being monitored at a local company. Samples of six observations each have been taken, and the results are listed. Using Factors from Table 10.3, determine lower and upper control limits for a a mean chart

Sample Number 1 2 3 4 5

------------- 65 65 66 58 55

------------- 68 58 62 73 67

------------- 58 51 63 54 58

------------- 45 65 51 61 73

------------- 55 67 64 76 64

------------- 59 51 63 65 57

a) 39.425, 83.041

b) 51.269, 71.197

c) 50.329, 72.137

d) 52.209, 70.257

e) none of these

2. 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

------------- 93 71 74

------------- 96 89 76

------------- 85 79 83

------------- 86 65 76

------------- 71 73 66

------------- 61 70 68

------------- 79 81 83

------------- 95 88 81

------------- 72 77 91

------------- 75 75 76

a) 60.389, 96.601

b) 3.08, 60.9

c) 0, 71.96

d) 6.16, 49.84

e) none of the above