       The total number of failures before the <span class="emphasis"><em>r</em></span>th
                success.
              </p></dd>
<dt><span class="term">successes</span></dt>
<dd><p>
                The number of successes required.
              </p></dd>
<dt><span class="term">alpha</span></dt>
<dd><p>
                The largest acceptable probability that the true value of the success
                fraction is <span class="bold"><strong>less than</strong></span> the value
                retu