Because Mulitple People Have Asked...

In a Repeated Measures Design, as with any ANOVA design, you must report the means, the standard deviations, and the ns for the cells you actually analyzed.

The reason for this is because ANOVA apportions variance over all variables included in the analysis. Had you not included time in the design, the obtained F for newgrp would not be the same as the one you got for the homework.

That is why including only the marginal means was incorrect on both your last homework and on the exam, and would be incorrect on this homework as well.