A customer service center wants to answer all calls within 30 seconds to 90 seco
ID: 405056 • Letter: A
Question
A customer service center wants to answer all calls within 30 seconds to 90 seconds with six sigma quality. Table 2.5 shows wainting time (in seconds) for a random sample of 50 customers for a customer service call center. Based on the information provided, what can you conclude?
58
54
67
68
55
51
54
67
69
59
63
52
53
56
70
54
51
50
55
62
54
67
69
64
55
69
53
64
60
65
69
62
65
67
65
67
56
63
58
51
57
69
68
69
65
59
51
50
60
57
58
54
67
68
55
51
54
67
69
59
63
52
53
56
70
54
51
50
55
62
54
67
69
64
55
69
53
64
60
65
69
62
65
67
65
67
56
63
58
51
57
69
68
69
65
59
51
50
60
57
Explanation / Answer
The avaerage (mean) of the calls is 60.32 and the standard deviation is 6.51. Upper Limit (UTL) is 385.84 and Lower Limit (LTL) is -265.20. With the range being <30 and >90, it means the call center is answering the calls within the target range.
Below is my excel example:
58 54 67 68 55 51 54 67 69 59 63 52 53 56 70 54 51 50 55 62 54 67 69 64 55 69 53 64 60 65 69 62 65 67 65 67 56 63 58 51 57 69 68 69 65 59 51 50 60 57Related Questions
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