Hooded rats: social play counts. In Exercise 29.13 you carried out two-way ANOVA for a study of the effect of social isolation on hooded rats. The response variable is the count of social play episodes during an observation period. Start your work in this exercise with your two-way ANOVA table from Exercise 29.13.
(a) How many treatment groups are there in this experiment?
(b) Starting from the two-way ANOVA table, create a one-way ANOVA table to examine the effect of the 4 groups.
(c) Is there a significant group effect? Give the appropriate hypotheses, test statistic, P-value, and conclusion in the context of this

experiment.

Exercise 29.13:

Hooded rats: social play counts. The researchers who conducted the study in the previous exercise also recorded the number of times each of three types of behavior (object play, locomotor play, and social play) occurred. The data file contains the counts of social play episodes by each rat during the observation period. Use two-way ANOVA to analyze the effects of gender and housing.