In a study carried out at the Infant Cognition Center at Yale University, researchers showed 16 infants two videos: one featured a character that could be perceived as helpful, and the other featured a character that could be perceived as hindering. After the infants viewed the videos, the researchers presented the infants with two objects that resembled the figures from the videos and allowed the infants to choose one to play with. The researchers assumed that the infants would not exhibit a preference and would make their choices by randomly choosing one of the objects. Fourteen of the 16 infants chose the helpful object. If the assumption that infants choose objects randomly were true, what is the probability that 14 or more of the infants would have chosen the helpful object? Could this be considered evidence that the infants must actually be exhibiting a preference for the helpful object? (Hint: Use the binomial distribution.)

  • CreatedSeptember 11, 2015
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