Activity 11.5-10c3: In an experiment to determine whether people can distinguish between two brands of cola, subjects are presented three cups. Two cups contain one brand of cola, and the third contains the other brand. Subjects are to taste from all three cups and then identify the one that differs from the other two. Suppose that an experiment consists of 30 of these trials. What is the probability of making more than 12 correct identifications by guessing? (Round to three decimal places)
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