ses in N trials
given prior success count (plus one) of alpha and prior failure count
(plus one) of beta</p>
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<p></p>
<p><code>real</code> <strong><code>beta_binomial_cdf</code></strong><code>(ints n, ints N, reals alpha, reals beta)</code><br>
The beta-binomial cumulative distribution function of n successes in N
trials given prior success count (plus one) of alpha and prior failure
count (plus one) of beta</p>
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