Suppose that a certain coin lands on heads with probability p. A trial consists of flipping the coin two-times in a row. This is repeated until the two flips are either heads or tails. What is the expected number of trials? The expected number of total 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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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Suppose that a certain coin lands on heads with probability p. A trial consists of flipping the coin two-times in a row. This is repeated until the two flips are either heads or tails. What is the expected number of trials? The expected number of total flips?

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