Alex is marketing researcher for a pharmaceutical company. His company has developed a new drug that has clinically proven to be effective against a specific cancer. The marketing department has formulated an integrated marketing plan for promoting the drug on TV and social media. Before running the advertising, the company wants to test the effectiveness of advertising copies.

Which research design (exploratory/descriptive/causal) is best suited to test the effectiveness of the advertising copies? (3 pts) Hint: there are two different copies of advertising copies in video format and the brand must pick one.

Which sampling is ideal for this campaign (probability vs. non-probability)? (2 pts). Specify the exact sampling method that you believe will work for this study (2 pts).

For the chosen research design and sampling method, specify the exact number of sample size. Please do not forget to mention the confidence interval utilized. Default power is 0.80 in G*Power. Describe what effect size you expect (small/medium/large) and the change in sample size when you vary the effect size (3 pts).