split into it's own HDI+ROPE section

Author: drbenvincent

examples/howto/hypothesis_testing.ipynb

@@ -509,6 +509,14 @@
     "az.plot_posterior(idata, var_names=[\"mu\"], rope=rope, figsize=(14, 3));"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "id": "46cf08f2",
+   "metadata": {},
+   "source": [
+    "### HDI+ROPE decision criteria"
+   ]
+  },
   {
    "cell_type": "markdown",
    "id": "de465219",

examples/howto/hypothesis_testing.myst.md

@@ -169,6 +169,10 @@ Third time in a row, `arviz` has our back and can plot the ROPE and HDIs.
 az.plot_posterior(idata, var_names=["mu"], rope=rope, figsize=(14, 3));
 ```
 
+### HDI+ROPE decision criteria
+
++++
+
 {ref}`kruschke2018rejecting` outlines the HDI+ROPE decision rule, which is summarised in the figure taken from that paper:
 
 ![](hdi_plus_rope_decision_rule.png)