Is there a difference in the annual divorce rates in predominantly rural counties among three geographic regions, namely, the Southwest, the Southeast, and the Northwest? Test at the .05 level. Annual divorce rates per 1,000 population for five randomly selected counties in the Southwest, six counties in the Southeast, and 5 counties in the Northwest are:

Southwest: ........5.9, 6.2, 7.9, 8.6, 4.6

Southeast: .......5.0, 6.4, 7.3, 6.2, 8.1, 5.1

Northwest: ........6.7, 6.2, 4.9, 8.0, 5.5