s="identifier">endl</span><span class="special">;</span>

<span class="comment">// Fraction of packs &gt;= 2.9 with a mean of 3 and standard deviation of 0.0608 is 0.95</span>
</pre>
<p>
            Notice that these two deceptively simple questions (do we over-fill or
            measure better) are actually very common. The weight of beef might be
            replaced by a measurement of more or less anything. But the calculations
            rely on the accuracy of the standard deviation - something that