Question: 14.44 Comparing therapies for anorexia The Anorexia data file on the books website shows weight change for 72 anorexic teenage girls who were randomly assigned

14.44 Comparing therapies for anorexia The Anorexia data file on the book’s website shows weight change for 72 anorexic teenage girls who were randomly assigned to one of three psychological treatments.

a. Show how to construct 95% confidence intervals to investigate how the population means differ.
Interpret them.

b. Report the Tukey 95% multiple comparison confidence intervals. Interpret and explain why they are wider than the confidence intervals in part a.

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