Let X Geometric(p). Find Var(X) as follows: Find EX and EX 2 by conditioning on the
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Let X ∼ Geometric(p). Find Var(X) as follows: Find EX and EX2 by conditioning on the result of the first "coin toss", and use Var(X) = EX2 −(EX)2.
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To find the variance of a geometric random variable X with parameter p you can use the method of conditioning on the first coin toss A geometric rando...View the full answer
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Related Book For
Introduction To Probability Statistics And Random Processes
ISBN: 9780990637202
1st Edition
Authors: Hossein Pishro-Nik
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