Normal distribution to approximate desired probability

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Reference no: EM1322599

Finding probability for the given data using normal approximation

Use the normal distribution to approximate the desired probability.

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 11 tosses. What is the probability of being correct 11 or more times by guessing? Does this probability seem to verify her claim?

a..0871, yes

b..4129, yes

c..0871, no

d..4129, no

Reference no: EM1322599

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