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

69 42 66 55 61

52 55 46 63 59

42 70 50 54 56

58 60 64 61 59

64 61 52 62 56

62 59 53 57 59

a) 36.918 , 78.214

b) 48.132 , 67

c) 47.242 , 67.89

d) 49.022 , 66.11

e) None of the Above

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

44 48 56

55 50 38

51 48 48

41 49 47

41 50 60

45 50 41

56 42 44

49 53 42

36 47 56

42 68 51

a) 2.493, 49.3

b) 0, 58.253

c) 4.986, 40.346

d) 34.46, 62.072

e) none of the above