You read in the results section of an article in a psychologyjournal that the results of at-test for independent sample meansrevealed a significant t12 = 1.8, with ?ˆX1?X2 = 2. If there were 8participants in the experimental group,
(a) how many participants were in the corresponding controlgroup?
(b) what significance level was used, and was the test aone-tailed or a two-tailed test?
(c) what was the mean difference between the experimental andthe control groups?
