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Based on the annual report of a research company, the research and devel- opment department wished to estimate how much time the average customer waits
Based on the annual report of a research company, the research and devel- opment department wished to estimate how much time the average customer waits in line. A random sample of 12 was observed as they stood in line. The times recorded in minutes were 56, 59, 60, 61, 64, 67, 68, 104, 110, 117, 122, and 128. Using a 10 percent level of significance, test the claim that the mean wait time is less than 95 minutes.
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