The following is data contains 18 patients who used one of three different treatments for back pain (1=

The following is data contains 18 patients who used one of three different treatments for back pain (1= old drug, 2=new drug 1, 3=new drug 2) for a period of one week. Before the start of the treatment, the pain of patients were asked (1=little pain to 7 = sever pain). Then after the treatment the pain of each patient was measured.

Type of Drug	Time
Type of Drug	Before	After
Old Drug	3.0 5.1 1.0 4.4 2.7 4.9	3.5 4.2 2.2 3.1 1.3 6.6
New Drug 1	6.5 4.1 2.2 3.7 3.4 3.0	2.2 1.4 1.1 1.5 2.6 2.0
New Drug 2	5.0 3.1 3.2 3.2 3.0 2.9	4.0 .80 1.9 2.8 2.2 1.9

Is there any different in three treatments regarding their pain after controlling for initial paint? First, make sure to examine the interaction effect. Use alpha=.05.
Contrast low and new drug 1 vs new drug 2.

Contrast old drug vs new drug1 and new drug2.
2) The following is data contains 21 subjects who used one of three different level of exercise (1= low, 2=moderate, 3=high) for a period of one month. Before the start of the exercise, the weight of each subject was measured. Then after the exercise the weight of each subject was measured.

Type of Exercise	Time
Type of Exercise	Before	After
Low	130 140 150 155 170 180 190	131 138 148 153 165 173 185
Moderate	135 144 149 152 169 182 189	132 140 145 145 160 175 180
High	132 144 147 150 173 179 192	128 134 137 142 160 164 172

Is there any different in three level of exercise regarding their weight after controlling for initial weight? First, make sure to examine the interaction effect. Let alpha=.05