s="special">()))</span> <span class="special">*</span> <span class="number">2</span> <span class="special">&lt;&lt;</span> <span class="identifier">endl</span><span class="special">;</span>
<span class="identifier">cout</span> <span class="special">&lt;&lt;</span> <span class="string">"Fraction 2 standard deviations within either side of mean is "</span>
  <span class="special">&lt;&lt;</span> <span class="number">1</span> <span class="special">-</span>  <span class="identifier">cdf</span><span class="speci