34; up to -1.96 is 0.025 (alpha/2) and the
            upper tail area from +z up to +1.96 is also 0.025 (alpha/2), and the
            area between -1.96 up to 12.96 is alpha = 0.95. and the sum of the two
            tails is 0.025 + 0.025 = 0.05,
          </p>
<h5>
<a name="math_toolkit.stat_tut.weg.normal_example.normal_misc.h1"></a>
            <span class="phrase"><a name="math_toolkit.stat_tut.weg.normal_example.normal_misc.standard_deviations_either_side_"></a></span><a class="link" href="normal_mi