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A coin is tossed 20 times. A person who claims to have extrasensory perception is asked to predict the outcome of each flip in advance.

A coin is tossed 20 times. A person who claims to have extrasensory perception is asked to predict the outcome of each flip in advance. She predicts correctly on 14 tosses. What is the probability of being correct 14 or more times by guessing? Does this probability seem to verify her claim? Use the normal distribution to approximate the desired probability

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