Hypothesis Testing- 508

a. Attitude change is thought to result from the anxiety produced under conditions of cognitive dissonance. The data below represent the anxiety scores of subjects in a dissonance study. Assuming that anxiety is distributed with mean=10 and standard deviation=2 test whether this sample exibited more anxiety than would be expected by chance alone. Make a clear, concise interpretation.
n=30, x bar=9, SS=96
b. Next, compare (2-tailed) the above (dissonance) to a control group with the following data. Make a clear, concise interpretation. n=30, x bar=11,SS=38

c. To further test these relationships, you cross the dissonance coditions with high and low anxiety conditions. That is, the subjects are assigned to either dissonance or control and either to receive a high or low anxiety stimulus. The DV is attitude change. Interpret these data.
Anxiety- High Dissonance
Anxiety- High Control
Anxiety-Low Dissonance
Anxiety- Low Control
F(3,39)=4.88,p<.05
Anxiety, p<.05
Dissonance, p<.05
Interaction, p<.05