of people with weight greater than 155 lbs is equal to
0.6.</p>
<div class="sourceCode" id="cb20"><pre class="downlit sourceCode r">
<code class="sourceCode R"><span><span class="fu"><a href="../reference/proptesti.html">proptesti</a></span><span class="op">(</span><span class="fu"><a href="https://rdrr.io/r/base/sum.html" class="external-link">sum</a></span><span class="op">(</span><span class="va">mri</span><span class="op">$</span><span class="va">weight</span> <span class="op">&gt;</span> <span class="f