t shows the profile likelihood ratio and the upper/lower limits
of the interval for the parameter of interest.  In 2-d, the LikelihoodIntervalPlot shows
the contour of the profile likelihood ratio for the parameters of interest.
</p>



<h4>Bernstein Correction</h4>
<p>
BernsteinCorrection is a utility in RooStats to augment a nominal PDF
with a polynomial 
correction term.  This is useful for incorporating systematic variations
to the nominal PDF.  
The Bernstein basis polynomails are particularly appro