                     empirical <span class="op">=</span> <span class="cn">FALSE</span><span class="op">)</span></span></span>
<span class="r-in"><span></span></span>
<span class="r-in"><span></span></span>
<span class="r-in"><span></span></span>
<span class="r-in"><span><span class="co">################################</span></span></span>
<span class="r-in"><span><span class="co">######### example 2 ############</span></span></span>
<span class="r-in"><span><span class="co">################################