Question: A study described in Food Network Magazine ( January 2012) concluded that people who push a shopping cart at a grocery store are less likely

A study described in Food Network Magazine ( January 2012) concluded that people who push a shopping cart at a grocery store are less likely to purchase junk food than those who use a hand- held basket.
a. Do you think this study was an observational study or an experiment?
b. Is it reasonable to conclude that pushing a shopping cart causes people to be less likely to purchase junk food? Explain why or why not.

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