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Let X be a r.v with pmf p(x) = c( 2 /3 )^ x , x...

Let X be a r.v with pmf p(x) = c( 2 /3 )^ x , x = 0, 1, 2, 3, ... (infinitely many values of x)

(a) Find the constant c. (b) With the constant you find in (a), find the mean E(X)

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TOPIC:Geometric distribution.

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