Problems in (high impact) GLM Hierarchical notebook

Notebook title:GLM: Hierarchical Linear Regression Notebook url: source link, website link

Issue description

There are many, many divergences in the sample of the main, hierarchical model. There also appear to be images missing under "The Models" section. Not sure what these are supposed to be.

Proposed solution

I suspect the sampling could be fixed by re-running and/or setting the random seed for stability. Not sure what the images were (at one time).