Question

You conduct an experiment involving two levels of self-confidence (a₁ is low, and a₂ is high) and examine participants’ anxiety scores after they speak to one of four groups of differing sizes (b1 through b4 represent speaking to a small, medium, large, or extremely large group, respectively).

You compute the following sums of squares (n=5 and N=40).

1. Complete the ANOVA summary table above. [Show where your #s come from – i.e., show your work; only df needed for Total.]

2. With alpha = .05, what do you conclude about EACH F_obtained? (That is, do you reject or fail to reject the null? Is the effect significant?)

3. How did you decide? [Show what you compared or used to make the decision.]

Answer 1

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