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(Solution) - Assume that the probability of a success on a single

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Assume that the probability of a ?success? on a single experiment with n outcomes is 1/n. Let m be the number of experiments necessary to make it a favourable bet that at least one success will occur (see Exercise 1.1.5).


(a) Show that the probability that, in m trials, there are no successes is (1 ? 1/n) m.


(b) (de Moivre) Show that if m = n log 2 then



(c) Would De Moivre have been led to the correct answer for de Mere?s two bets if he had used his approximation?


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This question was answered on: Jul 11, 2017

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