In a study of geographical temperature variation, research assistants in Townsville

(latitude 19°30'), Brisbane (latitude 27°30'), Sydney (latitude 34°00'), and Melbourne (latitude 37°45') were each asked to choose, at random, two days in May and record the maximum temperatures on those days. The results are as follows:

Townsville 27 31 Brisbane 24 18 Sydney 16 22 Melbourne 13 21 Perform an ANOVA test on these data. Comment on the null hypothesis and the test used. In light of these results, is it reasonable to believe that the maximum daytime temperatures in May in these various cities are the same? P-963