Added back in 68-95-99.7 rule

Author: mGalarnyk

.DS_Store

@@ -1324,36 +1324,6 @@
     "\n",
     "fig.savefig('images/NormalDistribution.png', dpi = 1200)"
    ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "## Stackoverflow Question"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "1. https://math.stackexchange.com/questions/2346769/help-reconcile-probability-density-functions-and-probability"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "$$\\int_{0}^{0}\\frac{1}{\\sqrt{2\\pi}}e^{-x^{2}/2}\\mathrm{d}x = 0$$"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {
-    "collapsed": true
-   },
-   "outputs": [],
-   "source": []
   }
  ],
  "metadata": {
@@ -1373,7 +1343,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython2",
-   "version": "2.7.12"
+   "version": "2.7.6"
   }
  },
  "nbformat": 4,