You are assessing the effectiveness of psychotherapy on aggressive thoughts and collect the following data from a sample of 4 people.   Before Therapy After 2 Sessions After 4 Sessions 5 3 1 6 5 4 8 6 4 13 10 7   Fill in the chart below: Source of Variation SS df MS F Between groups         Between Subjects         Residual Error         Total           What is the critical value?  What is your decision? (choose the appropriate letter from the options below)  Fail to reject the null because your results are not significant :( Reject the null because our results are not significant :( Fail to reject the null because your results are statistically significant! Reject the null because your results are statistically significant! What is the effect size

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A: Answer: For the given data,

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