Continuation. Let S be the total number of black balls extracted in the first n drawings (that
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Continuation. Let S be the total number of black balls extracted in the first n drawings (that is, S = X + + X). Find E(S) and Var (Sn). Verify the result by means of the recursion formula in problem 22 of V, 8.
Hint: Use problems 19, 20 of V, 8.
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Related Book For 
An Introduction To Probability Theory And Its Applications Volume 1
ISBN: 9780471257110
3rd Edition
Authors: William Feller
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