Researchers Wish to Examine the Effectiveness of a New Weight-Loss

Multiple Choice

Researchers wish to examine the effectiveness of a new weight-loss pill. A total of 200 obese adults are randomly assigned to one of four conditions: weight-loss pill alone, weight-loss pill with a low-fat diet, placebo pill alone, or placebo pill with a low-fat diet. The weight loss after six months of treatment is recorded in pounds for each subject. To analyze these data, which inference procedure would you use?

A) z test
B) t test
C) ANOVA F test
D) Chi-square test