Derive the CDF of a Geometric Random Variable

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
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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Derive the CDF of a Geometric Random Variable

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Step 1: Determine the given problem

A geometric random variable X represents the number of Bernoulli trials needed for a success to occur in a sequence of independent Bernoulli trials, where the probability of success on any given trial is p. It is given by the formula:

P left parenthesis X equals k right parenthesis equals left parenthesis 1 minus p right parenthesis to the power of k minus 1 end exponent p

Here, k is a positive integer. P(X=k) represents the probability that the first success occurs on the k-th trial.

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