A Teclear, Inc. call center requires service operators to answer telephone calls from customers in an average time of 0.15 minute or less. A sample of 36 actual operator times was drawn, and the results are given in the following table. In addition, operators are expected to determine customer needs and either respond to them or refer the customer to the proper department within 0.55 minute. Another sample of 36 times was taken for this job component and is also given in the table. If these variables can be considered to be independent, is the average time taken to perform each component statistically different from the standard?

 

T.INV for t-value, α = 0.05, and 35 degrees of freedom					-1.690

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Component Answer Service Mean Time 0.1523 0.5790 Standard Deviation 0.0183 0.0902