Abstract
Abstract Extract Let 〈Xi 〉 be a sequence of completely independent and identically distributed random variables such that Xi = + 1, −1 with probabilities p (0 (µ + λ)n holds for only finitely many n-values, where λ is any positive number less than 2 to avoid triviality. Define the indicator variables Yn ≡ Yn (p, λ) by Yn = 1 if Sn > (µ + λ)n and Yn = 0 otherwise. The counting variable of interest here is N∞ ≡ ∞ (p, λ) and is defined by . Hence, P{N∞ < ∞} = 1, that is, N∞ is an honest random variable or N∞ has a proper distribution. The following theorem provides some exact density functions of N∞ for selected combinations of p and λ and thus elucidates the nature of chance fluctuations of sums of Bernoulli random variables with respect to the “finitely man...
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