The fuel efficiencies for a sample of 27 compact, midsize, and large cars are entered into a

Question:

The fuel efficiencies for a sample of 27 compact, midsize, and large cars are entered into a statistical software package. Analysis of variance is used to investigate if there is a difference in the mean miles per gallon of the three car sizes. What do you conclude? Use the .01 significance level.

Summary Sum Sample Size Varlance Groups Average 22.35833 19.15556 16.75 268.3 172.4 100.5 9.388106 7.315278 7.303 12 Com