Question 205 out of 5 pointsResearchers were interested in whether relaxation training decreases the number ofheadaches a person experiences. They randomly assigned 20 participants to a control group or a relaxation training group and noted the change in number of headaches each group reported from the week before training to the week after training. Which statistical analysis should be performed to answer the researchers' question?
Question 15 out of 5 pointsIn a(n) _____, each participant is assigned to only one group in order to compare mean differences in a between-groups design.Selected Answer:independent-samples t testAnswers:single-sample t testz testindependent-samples t testpaired-samples t test
Question 25 out of 5 pointsWhich example best illustrates APA's standards for reporting descriptive statistics for an independent-samples t test?