Question

ch 9* a marketing class designs two videos advertising an expensive mercedes sports car. they test the videos by asking fellow students to view both (in random order) and say which makes them more likely to buy the car. mercedes should be reluctant to agree that the video favored in this study will sell more cars because
results from students may not generalize to the older and richer customers who might buy a mercedes.
the study used a matched pairs design instead of a completely randomized design.
this is an observational study, not an experiment.

Explanation:

1. Analyze the first option: The study's participants are students, while Mercedes' potential customers are older and richer. So student results may not apply to actual buyers.
2. Analyze the second option: A matched pairs design (viewing both videos) is appropriate here, so this is not a reason for reluctance.
3. Analyze the third option: The study is an experiment (testing videos' effect), not observational. So this is incorrect.

Answer:

A. results from students may not generalize to the older and richer customers who might buy a Mercedes.