Use the Excel display, which results from the scores listed in the accompanying table. The sample data are SAT scores on the verbal and math portions of SAT-I and are based on reported statistics from the College Board. The “Columns” variable is SAT (verbal/math) and the “Sample” variable is gender.

Test the null hypothesis that SAT scores are not affected by an interaction between gender and test (verbal/math). What do you conclude?

Solution: We need to test

Looking at the table we find that the p-value for the interaction is 0.09117, which is greater than the significance level. This means that we fail to reject the null hypothesis.

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