12.52 Organic foods and morals, continued. Refer to the previous exercise.

  1. (a) Analyze the scores using analysis of variance. Report the test statistic, degrees of freedom, and P-value.

  2. (b) Assess the assumptions necessary for inference by examining the residuals. Summarize your findings.

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

  4. (d) A higher score is associated with a harsher moral judgment. Using the results from parts (a) and (b), write a short summary of your conclusions.