Final answer:
Polling all Iowa State Students to determine study hours would mean that the poll represents the entire group in question, therefore, that would make it a population, not a sample.
Step-by-step explanation:
If we poll all Iowa State Students to find out how many hours the typical college student spends studying, then the poll is a population. This is because the poll is attempting to include every individual in the group of interest, which in this case is 'all Iowa State Students'. Therefore, the answer is b. Population.
When dealing with research and statistics, a sample refers to a subset of a population that is used to represent the entire group. In contrast, a population refers to the entire group about which information is desired. If the intention is to gather information about the typical study habits of every single student at Iowa State, and all students are indeed polled, then the group of respondents is not a sample but the entire population for this specific research question.