believe that your morning commute to UC Irvine is decreasing every week. You record th e of 7 commutes (one for each day of the week) (in minutes) for the a one-week block and the following one-week block. culations have been done for you: the sample mean difference is -1.714 and the sample standar -iation is 2.984. Conduct a hypothesis test at the a = 0.15 level. The mean differenc

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