Exercise 15. ANOVA. A researcher wanted to determine the most
effective diet for reducing LDL cholesterol, the so-called ”bad”
cholesterol, among 3 diets: (1) a saturated-fat diet, (2) the
Mediterranean diet, and (3) the NCEP-1 diet. Participants in the
study were shown to have the same levels of LDL cholesterol before
the study and were randomly assigned to one of the 3 diets. After
28 days, their LDL cholesterol levels were recorded. Assume the
samples are independent and that they...