Bernoulli Sequences and the Binomial Probability Distribution (VCE SSCE Mathematical Methods): Flashcards

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Bernoulli sequences and the binomial probability distribution
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Bernoulli sequence

Sequence with binary outcomes, constant prob., independence

1st property of Bernoulli sequence

Binary outcomes: success (SS) or failure (FF)

2nd property of Bernoulli sequence

Constant probability pp for success, 1p1-p for failure

3rd property of Bernoulli sequence

Independence: each trial doesn't affect others

Binomial random variable

Number of successes in nn trials of Bernoulli sequence

Notation for binomial distribution with nn trials, prob pp

XBi(n,p)X \sim \text{Bi}(n, p)

Formula: Pr(X=x)\text{Pr}(X = x) for binomial distribution

(nx)px(1p)nx\binom{n}{x}p^x(1-p)^{n-x}

Binomial coefficient (nx)\binom{n}{x}

n!x!(nx)!\frac{n!}{x!(n-x)!}

Calculator function for exact binomial probability

binomPdf

Calculator function for cumulative binomial probability

binomCdf

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