In the one-sample case, you are comparing the statistic from a sample to a known population parameter to determine whether the sample is from the general population. In the two-sample case, you are comparing the statistics from two different samples to determine whether the samples are from the same or different populations. There are important differences between the one-sample case and the two-sample case. Suppose you decide to test whether the mean SAT score of students who took an intensive SAT preparation course is the same as that of students who didn't take an SAT preparation course. Will this consist of a one-sample or a two-sample hypothesis test? Neither One-sample Two-sample