Fix grammatical errors in Chapter 4

there/their
equally as/equally
sample_size= 10000/sample_size = 10000

Author: jvns

Chapter4_TheGreatestTheoremNeverTold/LawOfLargeNumbers.ipynb

@@ -72,7 +72,7 @@
       "\n",
       "Below is a diagram of the Law of Large numbers in action for three different sequences of Poisson random variables. \n",
       "\n",
-      " We sample `sample_size= 100000` Poisson random variables with parameter $\\lambda = 4.5$. (Recall the expected value of a Poisson random variable is equal to it's parameter.) We calculate the average for the first $n$ samples, for $n=1$ to `sample_size`. "
+      " We sample `sample_size = 100000` Poisson random variables with parameter $\\lambda = 4.5$. (Recall the expected value of a Poisson random variable is equal to it's parameter.) We calculate the average for the first $n$ samples, for $n=1$ to `sample_size`. "
      ]
     },
     {
@@ -1038,7 +1038,7 @@
      "source": [
       "##### Exercises\n",
       "\n",
-      "1\\. How would you estimate the quantity $E\\left[ \\cos{X} \\right]$, where $X \\sim \\text{Exp}(4)$? What about $E\\left[ \\cos{X} | X \\lt 1\\right]$, i.e. the expected value *given* we know $X$ is less than 1? Would you need more samples than the original samples size to be equally as accurate?"
+      "1\\. How would you estimate the quantity $E\\left[ \\cos{X} \\right]$, where $X \\sim \\text{Exp}(4)$? What about $E\\left[ \\cos{X} | X \\lt 1\\right]$, i.e. the expected value *given* we know $X$ is less than 1? Would you need more samples than the original samples size to be equally accurate?"
      ]
     },
     {
@@ -1061,7 +1061,7 @@
      "cell_type": "markdown",
      "metadata": {},
      "source": [
-      "2\\. The following table was located in the paper \"Going for Three: Predicting the Likelihood of Field Goal Success with Logistic Regression\" [2]. The table ranks football field-goal kickers by there percent of non-misses. What mistake have the researchers made?\n",
+      "2\\. The following table was located in the paper \"Going for Three: Predicting the Likelihood of Field Goal Success with Logistic Regression\" [2]. The table ranks football field-goal kickers by their percent of non-misses. What mistake have the researchers made?\n",
       "\n",
       "-----\n",
       "\n",