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An individual’s present route to work results in, on average, 40 minutes of travel time per...

An individual’s present route to work results in, on average, 40 minutes of travel time per trip. An alternate route has been suggested that will reduce the travel time. Suppose the new route was tried on 10 randomly chosen occasions and the average travel time was 38.17 minutes and the standard deviation was 2.97 minutes. Do these data establish the claim that the new route is shorter, at the 5% level of significance? (Assume the distribution is normal.)

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