Hypothesis testing with one way ANOVA.

29 randomly selected subjects were exposed to commercials shown in more involving programs. (2) 29 randomly selected subjects were exposed to commercials shown in less involving programs and (3) 29 randomly selected subjects watched commercials only (note: this is called the control group). The mean brand recall scores for these three groups were, respectively, X1-bar = 1.21, X2-bar= 2.24, and X3-bar = 2.28. Furthermore, a one-way ANOVA of the data shows that SST = 21.40 and SSE = 85.56.

Describe appropriate treatment means μ1, μ2 and μ3. After that Test for statistically significant differences between these treatment means. Set α = 0.05.