Research Scenario 1
A researcher is interested in the effects of a new weight loss supplement. Participants in this double-blind study are randomly assigned to either a group that receives the new supplement or a group that receives a placebo. Participants are weighed before starting the program. After 6 weeks of taking either the new supplement or the placebo, participants return to the lab to be weighed.

• Provide the appropriate null and alternative hypotheses.
• Determine which type of analysis would be appropriate to answer this research question. Be specific and support your answer using the textbook or other course materials.
• Name the independent and dependent variables used in the analysis. What are the levels of the independent variable?
• Indicate the levels of measurement for each variable.
• Describe the Type I error for this study.
• Describe the Type II error for this study.