/r/stats/Exponential.html" class="external-link">rexp</a></span><span class="op">(</span><span class="va">n</span>, rate <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/base/Log.html" class="external-link">exp</a></span><span class="op">(</span><span class="va">X</span> <span class="op">+</span> <span class="va">Z</span> <span class="op">+</span> <span class="va">X</span> <span class="op">*</span> <span class="va">Z</span><span class="op">)</span><span class="op">)</span> <span class="