Researchers Brian Wansink and Junyong Kim randomly gave 157 moviegoers a free medium (120 grams) or large
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Researchers Brian Wansink and Junyong Kim randomly gave 157 moviegoers a free medium (120 grams) or large (250 gram) bucket of popcorn before entering a movie. After the show, the researchers measured how much popcorn the moviegoers consumed. The 77 individuals randomly assigned the medium bucket had a mean consumption of 58.9 grams with a standard deviation of 16.7 grams. The 80 individuals randomly assigned the large bucket had a mean consumption of 85.6 grams with a standard deviation of 14.1 grams. With 95% confidence, determine how much more popcorn was consumed by individuals given the large bucket of popcorn. What is the implication?
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Since the smaller sample size is n M 77 we use 76 degrees o...View the full answer
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