i</span><span class="op">)</span></span>
<span><span class="fu"><a href="https://rdrr.io/r/base/summary.html" class="external-link">summary</a></span><span class="op">(</span><span class="va">mod1</span><span class="op">)</span></span>
<span></span>
<span><span class="co">#*** Model 2: Separate mu.i parameter for all items</span></span>
<span><span class="va">est.mu.i</span><span class="op">[</span> <span class="fu"><a href="https://rdrr.io/r/base/seq.html" class="external-link">seq</a></span><span class="o