A social psychologist was interested in determining if viewing political advertisements increases viewers’ knowledge about the issues presented. Advertisements were selected, and a test of the information contained was constructed (higher score indicated more knowledge). One hundred participants took this test—50 who did not view the advertisements and 50 who did view the advertisements.
a. independent samples t-test
b. one-tailed test
c. H0: population of viewers ≤ population of non-viewers
H1: population of viewers > population of non-viewers