9. The probability of obtaining a head when a certain coin is tossed is p. The coin

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9. The probability of obtaining a head when a certain coin is tossed is p. The coin is tossed repeatedly until n heads occur in a row. Let X be the total number of tosses required for this to happen. Find the expected value of X.

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Probability An Introduction

ISBN: 9780198709978

2nd Edition

Authors: Geoffrey Grimmett, Dominic Welsh

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