Do college students learn basic accounting better in a classroom or using an online course? Is this question most reasonably answered with an experiment, a sample survey, or an observational study that is not a sample survey? Briefly explain your choice. If your answer is a sample survey, determine the population and the sample.
The answer is that it's an experiment and you want to see if there's a cause-and-effect between teaching method and amount learned.
My question is, why isn't it an observational study? Wouldn't it be better to observe people who use either methods and then see which methods produce better results?
What treatments are you imposing on the students? I know the factor is Teaching method.