xercises.html#cb940-1" aria-hidden="true" tabindex="-1"></a><span class="fu">data</span>(<span class="st">&quot;gibsonwu&quot;</span>)</span></code></pre></div>
<pre><code>## Warning in data(&quot;gibsonwu&quot;): data set &#39;gibsonwu&#39; not
## found</code></pre>
<p>Use simulation to determine how many subjects you would need to achieve power of 80%, given 16 items, and an effect size of 0.02 on the log ms scale. Draw a power curve: on the x-axis show the number of subjects, and on the y-axis the estima