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Diff — Margin of error

Revision #1383 → #1761 · back to history

modifiedVariance of a Bernoulli distribution2a1ab572e189
FieldFrom #1383To #1761
mathlib.declProbabilityTheory.variance_of_hasLaw_binomial
noteThe Bernoulli distribution is defined (PMF.bernoulli) and the binomial variance p(1-p)n is stated, but only as an unproved `proof_wanted`, so Var = p(1-p) is not actually established.The Bernoulli distribution is defined (PMF.bernoulli) and the binomial variance np(1-p) appears only as a `proof_wanted` placeholder in Mathlib/Probability/Distributions/Binomial.lean, so Var = p(1-p) is not actually established as a real declaration.