Using the data from Exercise 12.1, compute confidence interval for the first comparison (contrast) described in that question. Interpret your answer. (If you use SPSS, use the Compare Means/One-Way...

Using the data from Exercise 12.1, compute confidence interval for the first comparison (contrast) described in that question. Interpret your answer. (If you use SPSS, use the Compare Means/One-Way ANOVA procedure, which allows you to specify coefficients.)

Using the data from Exercise 12.1, compute effect sizes on all of the contrasts that you ran with that question. How would you interpret these effect sizes? Why are these called standardized effect sizes, and what would an unstandardized effect size be?