A Researcher Wants to Examine the Effect of Drugs and Diet

Multiple Choice

A researcher wants to examine the effect of drugs and diet on systolic blood pressure.She randomly assigns 20 individuals with high blood pressure to one of four treatments: control (no diet or drugs) , diet modification only, drug only, drug and diet modification.What type of design is appropriate for this study?

A) one-way within-groups ANOVA
B) two-way within-groups ANOVA
C) two-way between-groups ANOVA
D) mixed-design ANOVA