Section 8.6.2 reports data on reported hangover symptoms. For group 2, use the S-PLUS function rmanova to compare the trimmed means corresponding to times 1, 2, and 3. For the data used in Exercise 1,...

Section 8.6.2 reports data on reported hangover symptoms. For group 2, use the S-PLUS function rmanova to compare the trimmed means corresponding to times 1, 2, and 3.

For the data used in Exercise 1, compute confidence intervals for all pairs of trimmed means, using the S-PLUS function pairdepb.

Analyze the data for the control group reported in Table 6.1 using the methods in Sections 8.1 and 8.2. Compare and contrast the results.