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Each day John performs the following experiment. He flips a fair coin repeatedly until he sees...

Each day John performs the following experiment. He flips a fair coin repeatedly until he sees a T and counts the number of coin flips needed.

(a) Approximate the probability that in a year there are at least 3 days when he needed more than 10 coin flips. Argue why this approximation is appropriate.

(b) Approximate the probability that in a year there are more than 50 days when he needed exactly 3 coin flips. Argue why this approximation is appropriate.

Math   Statistics-And-Probability   
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