span class="identifier">under_weight</span><span class="special">))</span> <span class="special">&lt;&lt;</span> <span class="identifier">endl</span><span class="special">;</span>
<span class="comment">//</span>
</pre>
<p>
            Fraction of packs &gt;= 2.9 with a mean of 3 and standard deviation of
            0.05 is 0.9772
          </p>
<p>
            So 0.05 was quite a good guess, but we are a little over the 2.9 target,
            so the standard deviation could be a tiny bit more. So we could