Question: In the study above (problem #3), an extraneous variable is the fact that subjects may lose weight during the 60 day time period for reasons other than the diet. Therefore, we decide to include a control group. This group will be matched in weight to the experimental subjects, but will not receive the diet. Their data is given below. Is the diet effective? Feel free to be creative in your solution to this problem because there might be multiple ways of solving based upon what we have learned.