(solution) Shrauger (1972) conducted an experiment that compared the effect

(solution) Shrauger (1972) conducted an experiment that compared the effect

Shrauger (1972) conducted an experiment that compared the effect of an audience on the performance of participants with high and low self-esteem. Hypothetical data from this experiment are as follows. The data represents the number of errors made by each participant (6 participants in each condition):

Alone With audience
Self-esteem High 3, 6, 2, 2, 4, 7 9, 4, 5, 8, 4, 6
Low 7, 7, 2, 6, 8, 6 10, 14, 11, 15, 11, 11

(Using SPSS) Is there 1) a main effect of self-esteem, 2) a main effect of alone/audience, and 3) an interaction between the two?