The article Super Bowls: Serving Bowl Size and Food Consumption (Journal of the American Medical Association [
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a. Do you think that the alternate assignment to the experimental groups (large serving bowls, small serving bowls) based on arrival time is “close enough” to random assignment? That is, do you think it would tend to create comparable experimental groups?
b. In this study, the research assistant who weighed the plates and estimated the calorie content of the food on the plate was blinded as to which experimental group the plate belonged to and was also blinded as to the purpose of the experiment. Why do you think the researchers chose to incorporate this type of blinding?
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