>*</span> <span class="n">c</span> <span class="o">+</span> <span class="p">(</span><span class="mi">1</span> <span class="o">-</span> <span class="n">y_ratio_yhat</span> <span class="o">-</span> <span class="n">c_ratio_yhat</span><span class="p">)</span> <span class="o">*</span> <span class="n">rng</span><span class="o">.</span><span class="n">normal</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="mi">1</span><span class="p">,</span> <span class="n">n</span><spa