A commuter is trying to figure out the fastest way to drive to work in the morning. She keeps track of the times (in minutes) for three different routes on a random sample of mornings. Her records are shown in Exhibit 11.20.

Is there evidence, at the 5% significance level, of a difference in commuting times? You should have already checked conditions in Develop Your Skills 11.1, Exercise 4.

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Commuting Times in Mimutes Route 2 Route 3 31 49 Route 1 54 32 51 46 56 57 53 43 61 36 57 35 49 35