logpdf_lazy_beta_binomial

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function logpdf_lazy_beta_binomial(x:Expression<Integer>, n:Expression<Integer>, α:Expression<Real>, β:Expression<Real>) -> Expression<Real>

Observe a beta-binomial variate.

• x: The variate.
• n: Number of trials.
• α: Shape.
• β: Shape.

Returns: the log probability mass.