 <span class="fl">2</span>, <span class="fl">1</span><span class="op">)</span></span></span>
<span class="r-in"><span><span class="va">ss1</span><span class="op">$</span><span class="va">W2</span> <span class="op">&lt;-</span> <span class="fl">1</span></span></span>
<span class="r-in"><span></span></span>
<span class="r-in"><span><span class="co"># Run random-intercept 2-level model </span></span></span>
<span class="r-in"><span><span class="va">two_level</span> <span class="op">&lt;-</span> <span class="fu