lass="identifier">s</span><span class="special">.</span><span class="identifier">standard_deviation</span><span class="special">())</span> <span class="special">&lt;&lt;</span> <span class="identifier">endl</span><span class="special">;</span>  <span class="comment">// from -infinity to 1 sd</span>
<span class="identifier">cout</span> <span class="special">&lt;&lt;</span> <span class="string">"cdf(complement(s, s.standard_deviation())) = "</span>
  <span class="special">&lt;&lt;</span> <span class="identifi