12.56 Financial incentives for weight loss, continued. Refer to the previous exercise.

  1. (a) Analyze the change in weight using analysis of variance. Report the test statistic, degrees of freedom, P-value, and your conclusions.

  2. (b) Even though you assessed the model assumptions in the previous exercise, let’s check the assumptions again by examining the residuals. Summarize your findings.

  3. (c) Compare the groups using the least-significant difference method.

  4. (d) Using the results from parts (a), (b), and (c), write a short summary of your conclusions.