s="n">np</span><span class="o">.</span><span class="n">log</span><span class="p">(</span><span class="mi">2</span><span class="p">)</span> <span class="o">*</span> <span class="nb">sum</span><span class="p">(</span><span class="n">survival_time</span><span class="p">)</span>
        <span class="n">mu_post</span> <span class="o">=</span> <span class="n">beta_post</span> <span class="o">/</span> <span class="p">(</span><span class="n">alpha_post</span><span class="o">-</span><span class="mi">1</span><span cl