class="identifier">endl</span><span class="special">;</span>
<span class="comment">// fraction of packs &lt;= 2.9 with a mean of 3 is 0.841345</span>
<span class="comment">// This is 0.84 - more than the target 0.95</span>
<span class="comment">// Want 95% to be over this weight, so what should we set the mean weight to be?</span>
<span class="comment">// KK StatCalc says:</span>
<span class="keyword">double</span> <span class="identifier">over_mean</span> <span class="special">=</span> <span class="number"