Part III. After completing the 24-week dietary intervention, the researcher wonders whether the preferred dietary habits of the participants (part I) and the time point at which BMI was measured (part II) mattered in the context of the research study. To answer this question, the researcher conducts a mixed factorial ANOVA. Assume that the researcher is interested in exploring both the between and within group effects in BMI for this part of the assignment and use the JASP data file provided to perform and answer questions for a mixed factorial AN OVA. 1. What is the research question? Why is a mixed factorial AN OVA appropriate to answer this research question? 2. Provide a statistical, symbolic, and substantive hypothesis for the research study. 3. 4. List and operationally define the variables. Which variable(s) is independent? Which Choose an a priori alpha level and designate whether the test is 1-tailed or 2-tailed. variable(s) is dependent? How many levels does the independent variable have and what are they? What are the levels or scales of measurement for the variables