Shane has conducted an observational study to learn about how different media messages affect toy purchases. shane surveyed 250 shoppers at the mall and found that 70% of the shoppers were shopping for a specific item they saw advertised on the internet. what conclusion can shane make from his study? there may be a link between advertisements on the internet and toy purchases, but he cannot draw a cause-and-effect conclusion from an observational study. there may be a link between advertisements on the internet and toy purchases, and he can draw a cause-and-effect conclusion from an observational study. an internet advertisement causes shoppers to buy specific toys, but he cannot draw a cause-and-effect conclusion from an observational study. an internet advertisement causes shoppers to buy specific toys, and he can draw a cause-and-effect conclusion from an observational study.