
<p>Notice that Standard Errors calculated with <code>optim</code>
(<math display="inline" xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mn>0.041944</mn><annotation encoding="application/x-tex">0.041944</annotation></semantics></math>)
and those calculated with bootstrap implementation
(<math display="inline" xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mn>0.040101</mn><annotation encoding="application/x-tex">0.040101</annotation></semantics></math>)
are approximately equals, but no ident