="external-link">rnorm</a></span><span class="op">(</span>n <span class="op">=</span> <span class="fl">100</span><span class="op">)</span></span></span>
<span class="r-in"><span><span class="va">null_test</span> <span class="op">&lt;-</span> <span class="fu">pt_from_os</span><span class="op">(</span><span class="va">os_train</span>, <span class="va">os_test</span><span class="op">)</span></span></span>
<span class="r-in"><span><span class="va">null_test</span></span></span>
<span class="r-out co"><span clas