Table 12.40 shows results of using SAS for analyzing the anorexia data of Table 12.21. (a) Explain how to use the information in this table to test Ho: no interaction between treatment and time. (b)...

Table 12.40 shows results of using SAS for analyzing the anorexia data of Table 12.21.

(a) Explain how to use the information in this table to test Ho: no interaction between treatment and time.

(b) Explain why it docs not make sense to conduct the tests ofthe main effects.