A random sample of 400 response times taken during the peak period of the interactive inquiry system at Futile Finance yields a mean of 21 time units with a standard deviation of 12 time units. The service level agreement between the MIS Department and the users of the inquiry system is that the mean response time for the peak period should not exceed 20 time units. A test is to be made each day at the 1% level. Does the system pass today

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