Update MorePyMC.ipynb

Probably a type since the code uses `N_B = 750`

Chapter2_MorePyMC/MorePyMC.ipynb

@@ -852,7 +852,7 @@
       "\n",
       "### *A* and *B* Together\n",
       "\n",
-      "A similar anaylsis can be done for site B's response data to determine the analgous $p_B$. But what we are really interested in is the *difference* between $p_A$ and $p_B$. Let's infer $p_A$, $p_B$, *and* $\\text{delta} = p_A - p_B$, all at once. We can do this using PyMC's deterministic variables. (We'll assume for this exercise that $p_B = 0.04$, so $\\text{delta} = 0.01$, $N_B = 200$ (signifcantly less than $N_A$) and we will simulate site B's data like we did for site A's data )"
+      "A similar anaylsis can be done for site B's response data to determine the analgous $p_B$. But what we are really interested in is the *difference* between $p_A$ and $p_B$. Let's infer $p_A$, $p_B$, *and* $\\text{delta} = p_A - p_B$, all at once. We can do this using PyMC's deterministic variables. (We'll assume for this exercise that $p_B = 0.04$, so $\\text{delta} = 0.01$, $N_B = 750$ (signifcantly less than $N_A$) and we will simulate site B's data like we did for site A's data )"
      ]
     },
     {
@@ -2593,4 +2593,4 @@
    "metadata": {}
   }
  ]
-}
+}