h</code></font></td></tr></table><a name="l130"></a>

<p><strong><pre>Beta&lt;&gt;(T a, T b)</pre></strong>
Beta distribution with parameters a and b.  The mean of the distribution
is a/(a+b) and its variance
is ab/((a+b)^2(a+b+1)).
Use the method <code>setParameters(T a, T b)</code> to change the
parameters.
<!-- BZINDEX Beta RNG --><a name="index00455">
<p><br><br><table width="100%" border="0" cellpadding="3"><tr><td align="left" bgcolor="#1080BF"><font color="#ffffff" face="Helvetica" size=+3>9.7.5: <co