/span><span class="w"> </span><span class="n">sample</span><span class="w"> </span><span class="n">mean</span><span class="p">)</span><span class="o">.</span>

<span class="n">The</span><span class="w"> </span><span class="n">denominator</span><span class="w"> </span><span class="n">N</span><span class="o">-</span><span class="mi">1</span><span class="w"> </span><span class="k">is</span><span class="w"> </span><span class="n">used</span><span class="w"> </span><span class="ow">in</span><span class="w"> </sp