output"><span class="identifier">r</span> <span class="special">&gt;</span>
          <span class="number">0</span></code> and <code class="computeroutput"><span class="number">0</span>
          <span class="special">&lt;=</span> <span class="identifier">p</span>
          <span class="special">&lt;=</span> <span class="number">1</span></code>.
        </p>
<h6>
<a name="math_toolkit.dist_ref.dists.negative_binomial_dist.h3"></a>
          <span class="phrase"><a name="math_toolkit.dist_ref.dists.negative_