ass="special">;</span> <span class="comment">// and standard deviation is 1.</span>
</pre>
<p>
            Suppose we want to find a different normal distribution with standard
            deviation so that only fraction p (here 0.001 or 0.1%) are below a certain
            chosen limit (here -2. standard deviations).
          </p>
<pre class="programlisting"><span class="keyword">double</span> <span class="identifier">z</span> <span class="special">=</span> <span class="special">-</span><span class="numb