Use the Normal Distribution to Approximate the Desired Probability

question 95

Multiple Choice

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) 0.0871, yes
• B) 0.4129, no
• C) 0.4129, yes
• D) 0.0871, no

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