I think Monica may have reversed her terms, accidentally. Regardless, I believe the HW question is correct as written. Her point is that you may come up with values for the situation you described as well, if you prefer and we can discuss in class. The purpose of this question is to go thru the process of applying what we know about interaction summary metrics to see how these can be applied to different scenarios, and what patterns one can discern. We were not focused specifically on scenarios from any particular reading. The one you describe is an appropriate scenario to consider as well, though.
Best,
JMC