Let X denote a Geometric random variable with probability of success p. Show that the
sum of probabilities of all possible outcomes of X is 1.
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Let X denote a Geometric random variable with probability of success p. Show that the
sum of probabilities of all possible outcomes of X is 1.
Note thatQuote:
Originally Posted by MathJack
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 = \sum^{\infty}_{k=1}p(1-p)^{k-1} = p \sum^{\infty}_{k=1}(1-p)^{k-1} =)