The following data were obtained from a repeated-measures study comparing three treatment conditions. Use a repeated-measures ANOVA with ? = .05 to determine whether these data are sufficient to demonstrate significant differences between the treatments (12 points).
Treatment
I II III P
A 6 8 10 24
B 5 5 5 15
C 1 2 3 6
D 0 1 2 3
T = 12 T = 16 T = 20
SS = 26 SS = 30 SS = 38
G = 48
?X2 = 294