Each day John performs the following experiment: he flips a coin repeatedly until he gets tails 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.   (b) Approximate the probability that in a year there are more than 50 days when he needed exactly 3 coin flips.

A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
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Chapter1: Combinatorial Analysis
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Each day John performs the following experiment: he flips a coin repeatedly until he gets tails 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.

 

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

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