The numbers of state parks found in selected states in three different regions of the country are listed below.

South	West	New England
51	28	94
64	44	72
35	24	14
24	31	52
47	40

a. (15 pts) At a= 0.05 can it be concluded that the average number of state parks differs by region?

b. (5 pts) If there is a significant difference among the means, test each pair of means.