 is almost
            always less good than we might wish, especially if based on a few measurements.
          </p>
<h5>
<a name="math_toolkit.stat_tut.weg.normal_example.normal_misc.h6"></a>
            <span class="phrase"><a name="math_toolkit.stat_tut.weg.normal_example.normal_misc.length_of_bolts"></a></span><a class="link" href="normal_misc.html#math_toolkit.stat_tut.weg.normal_example.normal_misc.length_of_bolts">Length
            of bolts</a>
          </h5>
<p>
            A bolt is usable if be