Grade 12 Chem Help please

I'm working on an assignment for Grade 12 Chemistry and I'm really lost and do not know where to start and what to do. I need to "design an experiment you could carry out to test the hypothesis that changing the catalyst has no effect on the production of biodiesel."

Your design must include the following parts:
• statement of problem being investigated
• list of variables with each identified as manipulated, controlled, or responding
description of how the experiment will be conducted
• description of how certain variables are controlled during the experiment
• identification of how you will determine a “result” in this experiment
• description of the experimental control for this investigation.
• description of how data collected from the experiment would be used to answer the research problem posed.