fact it is false. Also note that for a two-sided test, alpha
            must be divided by 2.
          </p>
<p>
            The final parameter of the function is the standard deviation of the
            sample.
          </p>
<p>
            In this example, we assume that alpha and beta are the same, and call
            <code class="computeroutput"><span class="identifier">find_degrees_of_freedom</span></code>
            twice: once with alpha for a one-sided test, and once with alpha/2 for
         