1) The dependent-samples t test can be used with either a within-subjects or a matched-groups design

a. true

b. false

2) What is/are the primary advantage(s) of using a dependent-samples design versus using an independent-samples design?

a. dependent-groups designs require more participants

b. dependent-samples designs can reduce variability caused by differences in participant characteristics

c. dependent-samples designs eliminate worry about order effects.

d. all of the above

3) With = .05and a sample ofn= 12 participants in a within-subjects study comparing two treatments, the two-tailed critical region for thet statistic has boundaries of ____.

a. t=1.812

b. t=1.796

c. t=2.201

4) Which of the following results in a largert-obtained value in a dependent-samples design?

a. increasing the sample size; increasing variance; increasing the mean difference

b. decreasing the sample size; increasing variance; decreasing the mean difference

c. increasing the sample size; decreasing variance; decreasing the mean difference

d. increasing the sample size; decreasing variance; increasing the mean difference

e. increasing the sample size; increasing variance; decreasing the mean difference