The distance required to stop a vehicle on wet pavement was measured to compare the stopping power of four major brands of tires. A tire of each brand was tested on the same vehicle on a controlled wet pavement. The resulting distances follow.

At a = 0.05 is there sufficient evidence to conclude that there is a difference in the mean stopping distance?
a. Solve using the p-value approach.
b. Solve using the classical approach.

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Brand A 37 34 38 36 40 32 Brand B 37 40 37 42 38 Brand C Brand D 41 41 40 39 41 43 istance [replicate 34 38 35 42 34