Get High-quality written work Help from our Professionals _Statistical analysis You can use SPSS or R. The code is needed An experiment was conducted to test the effect of SAT training. Half of the subjects were assigned to the control group and the other half were assigned to the experimental group. Assignment to groups was random. Assume the distribution of SAT scores is normal. All subjects were given a pretest. The control group spent 4 hours a week for 5 weeks watching PBS while the experimental group spent 4 hours a week for 5 weeks in a special training program. All subjects were then given a posttest. For the following data (a) do an analysis of variance giving the F df and p for each the two main effects and the interaction (b) plot the interaction (c) describe the interaction in words as it relates to the effect of SAT training and (d) do an ANCOVA on post-test scores with pretest scores as the covariate. Note that the effect of conditions in the ANCOVA is testing the same thing as the interaction in the ANOVA.
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