Refer to Practice Exercise 2. Use Tukey’s HSD to make all pairwise comparisons between the groups, using Display the results using either a table of means or a line graph, and summarize the results in...

Refer to Practice Exercise 2. Use Tukey’s HSD to make all pairwise comparisons between the groups, using Display the results using either a table of means or a line graph, and summarize the results in a short paragraph.

Exercise 2

An experiment has four factor levels. Each group had a sample size of five. Table 6.21 shows the sample means and standard deviations both within the groups and for the overall sample.

Construct the ANOVA table for this data, and test the hypothesis that there are no differences in the population group means.