3. A psychologist wants to determine which of three advertisements is most likely to encourage teens not to drink. To assess the impact of each ad, he asks a sample of teenagers to view each ad and to...

Extracted text: 3. A psychologist wants to determine which of three advertisements is most likely to encourage teens not to drink. To assess the impact of each ad, he asks a sample of teenagers to view each ad and to rate its effectiveness on a scale of 1 (not at all effective) to 7 (very effective). One ad used words only (no-cues condition), a second ad used a generic abstract picture (generic-cues condition), and a third showed a picture of a teen drinking and impacts (smoking-related cues condition). Participant No cues Generic cues Drinking related cues A 3 5 B 3 4 6 1 4 5 3 5 7 E 4 3 F 2 7 G 2 1 6. T= 16 T= 23 T= 42 SS = 7.43 SS = 9.43 SS = 4 %3D N = 21 G= 81 EX? = 385 a. Using the 5 steps of hypothesis testing, determine if there are any significant differences in perceived effectiveness among the three advertisements. Alpha = .05. Compute post-hoc tests, if appropriate. b. Compute n?.