20. The following data summarize the results from an independent-measures study comparing three treatment conditions. M = 2 M = 3 M = 4 n = 10 n = 10 n = 10 T = 20 T = 30 T = 40 s2 = 2.67 s2 = 2.00 s2 = 1.33 a. Use an ANOVA with a = .05 to determine whether there are any significant differences among the three treatment means. Note: Because the samples are all the same size, MS is the average of the three sample variances.

b. Calculate n2 to measure the effect size for this study.

Americans often speak of their country as one of several large regions.  these regions are cultural units rather than governmental units --  formed by history and geography and shaped by the economics, literature and folkways that all the parts of a region share. what makes one region different from another? a region's multicultural heritage as well as distinct demographic characteristics like age and occupation make regions different and special. within several regions, language is used differently and there are strong dialects. there are also differences in outlook and attitude based on geography.