 and <code>beta</code> are both hard coded to the
value 0.1. To allow such variables to be configurable based on data
supplied to the program at run time, they must be declared in the
<code>data</code> block, like the variables <code>mu_mu</code> and
<code>sigma_mu</code>.</p>
<p>This program declares two modeled parameters, <code>mu</code> and
<code>tau_y</code>. These are the location and precision used in the normal
model of the values in <code>y</code>. The heart of the model will be
sampling the values