A maker of dietary supplements would like to claim that a new supplement increases performance on an IQ test. IQ tests are administered to a simple random sample of people taking the supplement as a treatment and a control group. The results of the study are below. Control Treatment 104.357 107.231 What are the population parameters? Mean Variance 206.247 77.026 Observations 14 13 The mean score for all test-takers in each of the two groups v Hypothesized Mean Difference 0 df 22 Is the two-sample hypothesis test a paired t-test or an unpaired t-test? t Stat 0.632 P(T