               is used here, since it has already been optimised for the lowest
                    possible error - indeed this is really just a thin wrapper around
                    part of the internals of the incomplete beta function.
                  </p>
                </td>
</tr>
<tr>
<td>
                  <p>
                    cdf
                  </p>
                </td>
<td>
                  <p>
                    Using the relation:
                  </p>
                  <p>
       