The questions on the left relate to t tests. Think carefully before clicking on the “answer” link. In all the questions, construct the null and alternate hypotheses. Then give the rejection regions for an alpha-level of 0.05 as well as 0.01.
In addition, when you have a two-sample t test identify the treatments and subjects, decide whether the design is scientific or post facto, and whether the design is independent or correlated. If the design is correlated, indicate whether it is a matched or repeated design.