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The Bernoulli distribution is a discrete distribution parametrized by a single "success" probability. It is a special case of the binomial distribution.
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Expected value and variance of number of successes minus number of failures
This is one of my friends homework question. I tried to solve it and explain to him but I couldn't solve it. The question is simple.
Let $
X_n = (\text{# of successes}) - (\text{# of failures})
$
i …