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 What are the population parameters? Mean 103.929 104.154 Variance 198.533 52.474 Observations 14 13 Pick Hypothesized Mean Difference 0 di 20 Is the two-sample hypothesis test a paired t-test or an unpaired t-test? t Stat 0.053 PIT