/sup></a> which we
implement as <code>kfold_tttest</code> in <code>correctR</code>:</p>
<p><span class="math display">\[
t = \frac{\frac{1}{n} \sum_{j=1}^{n}x_{j}}{\sqrt{(\frac{1}{n} +
\frac{\rho}{1-\rho})\sigma^{2}}}
\]</span></p>
<p>where <span class="math inline">\(n\)</span> is the number of
resamples and <span class="math inline">\(\rho = \frac{1}{k}\)</span>
where <span class="math inline">\(k\)</span> is the number of folds in
the <span class="math inline">\(k\)</span>-fold cross-validation
procedure