a) If he will stop after getting a tail, what is the probability that he will stop after 4 flips. b) if he will stop after getting 3 tails, what is the probability that he will stop after 7 flips.

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Q: uppose that you flip a coin 14 times. What is the probability that you achieve at least 5 tails?

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Q: Suppose that you flip a coin 11 times. What is the probability that you achieve at least 4 tails?

A: