A customer service center wants to answer all calls within 30 seconds to 90 seconds with Six Sigma quality. Table 2.5 shows waiting shows waiting 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?
Table 2.5: Customer Waiting Times (in seconds)
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