Question: A physician who specializes in weight control has three different diets she recommends. As an experiment, she randomly selected 15 patients and then assigned 5 to each diet. After three weeks, the following weight losses, in pounds, were noted. At the .05 significance level, can she conclude that there is a difference in the mean amount of weight loss among the three diets?

a. State the null hypothesis and alternative hypothesis.

b. What is the decision rule?

c. Read this carefully. Complete an ANOVA table by using Excel or Megastat. Copy and paste your Excel or Megastat worksheet that shows the ANOVA table for this exercise.

d. What is your decision about Ho?