title: Wrong value of confidence interval ci returned by summarySE() [Rmisc package]?
body: <p>I don't understand how summarySE() in Rmisc package calculates the confidence intervals (ci) of my data. The values do not seem to be correct.</p>
  <p>For example, after running <code>summarySE(data = df, measurevar = &quot;numbers&quot;, groupvars = &quot;conditions&quot;, conf.interval = 0.95)</code>, the output shows:</p>
  <pre><code>     conditions  N numbers        sd        se        ci
  1 constructionA 10   6.025 0.3987829 0.1261062 0.2852721
  2 constructionB 10   1.925 0.3545341 0.1121135 0.2536184
  </code></pre>
  <p>However, the confidence interval of constructionA should be 6.025 ± 1.96 x (0.398729)/√10, which should be 6.025 ± 0.24716366. I don't understand where the value of 0.2852721 comes from after applying summarySE... Shouldn't it be 0.24716366?</p>
  <p>Could anyone tell me what's wrong here?</p>
  <p>Thank you!</p>