A cognitive psychologist was interested in the impact of 2 dimensional visual stimuli on the spontaneous exploration behavior in rats. Twenty four rats (N = 24) were selected to participate and randomly assigned to three treatment conditions visual images of shapes, visual images of patterns and visual images that used pictures. Rats were released into the chamber and the number of seconds the rats spent exploring the experimental chamber with the images were recorded.

Using the data provided below determine whether there are statistically significant differences among the conditions with a .05 level of significance.

Be sure to include hypotheses, critical boundaries, F-score and your decision that should include, notation, decision and an explanation of the results. Calculate and interpret an effect size (if appropriate) for the results. Indicate whether post hoc tests should be completed.

Shapes	Patterns	Pictures
T = 8	T = 20	T = 32
SS = 8	SS = 6	SS = 30	x2= 230