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A certain vehicle emission inspection station advertises that the wait time for customers is less than 8minutes. A local resident is skeptical and collects a
A certain vehicle emission inspection station advertises that the wait time for customers is less than 8minutes. A local resident is skeptical and collects a random sample of 49 wait times for customers atthe testing station. He finds that the sample mean is 7.34 minutes, with a standard deviation of 3.2minutes. Does the sample evidence support the resident's skepticism? Use the = 0.01 level of significance
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