A fair coin is tossed until heads appears four times. a) Find the probability that it...

Question

Question

A fair coin is tossed until heads appears four times.

a) Find the probability that it took exactly 10 flips.

b) Find the probability that it took at least10 flips.

c) Let Y be the number of tails that occur. Find the pmf of Y.

Answer 1

Answer #1

Answer 2

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