putes probability of <code>f &gt;= x</code>
being true (more strictly, of random variable, represented by <code>f</code>, being not
less than <code>x</code>). This corresponds to right one-sided p-value.</p>
<p>Method "left" for each element <code>x</code> of <code>obs</code> computes probability of <code>f &lt;= x</code>,
which is a left one-sided p-value.</p>
<p><strong>Note</strong> that by default multiple p-values in output are adjusted with
<code>p.adjust(*, method = adjust)</code>. To not do any adju