diff --git a/your-code/main.ipynb b/your-code/main.ipynb
index cdc1acb..fbe7fb3 100644
--- a/your-code/main.ipynb
+++ b/your-code/main.ipynb
@@ -14,12 +14,14 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 35,
    "metadata": {},
    "outputs": [],
    "source": [
     "# import numpy and pandas\n",
-    "\n"
+    "import numpy as np\n",
+    "import pandas as pd\n",
+    "import scipy.stats as st"
    ]
   },
   {
@@ -35,12 +37,11 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 5,
    "metadata": {},
    "outputs": [],
    "source": [
     "# Run this code:\n",
-    "\n",
     "pokemon = pd.read_csv('../pokemon.csv')"
    ]
   },
@@ -53,12 +54,154 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
+   "execution_count": 7,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/html": [
+       "<div>\n",
+       "<style scoped>\n",
+       "    .dataframe tbody tr th:only-of-type {\n",
+       "        vertical-align: middle;\n",
+       "    }\n",
+       "\n",
+       "    .dataframe tbody tr th {\n",
+       "        vertical-align: top;\n",
+       "    }\n",
+       "\n",
+       "    .dataframe thead th {\n",
+       "        text-align: right;\n",
+       "    }\n",
+       "</style>\n",
+       "<table border=\"1\" class=\"dataframe\">\n",
+       "  <thead>\n",
+       "    <tr style=\"text-align: right;\">\n",
+       "      <th></th>\n",
+       "      <th>#</th>\n",
+       "      <th>Name</th>\n",
+       "      <th>Type 1</th>\n",
+       "      <th>Type 2</th>\n",
+       "      <th>Total</th>\n",
+       "      <th>HP</th>\n",
+       "      <th>Attack</th>\n",
+       "      <th>Defense</th>\n",
+       "      <th>Sp. Atk</th>\n",
+       "      <th>Sp. Def</th>\n",
+       "      <th>Speed</th>\n",
+       "      <th>Generation</th>\n",
+       "      <th>Legendary</th>\n",
+       "    </tr>\n",
+       "  </thead>\n",
+       "  <tbody>\n",
+       "    <tr>\n",
+       "      <th>0</th>\n",
+       "      <td>1</td>\n",
+       "      <td>Bulbasaur</td>\n",
+       "      <td>Grass</td>\n",
+       "      <td>Poison</td>\n",
+       "      <td>318</td>\n",
+       "      <td>45</td>\n",
+       "      <td>49</td>\n",
+       "      <td>49</td>\n",
+       "      <td>65</td>\n",
+       "      <td>65</td>\n",
+       "      <td>45</td>\n",
+       "      <td>1</td>\n",
+       "      <td>False</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>1</th>\n",
+       "      <td>2</td>\n",
+       "      <td>Ivysaur</td>\n",
+       "      <td>Grass</td>\n",
+       "      <td>Poison</td>\n",
+       "      <td>405</td>\n",
+       "      <td>60</td>\n",
+       "      <td>62</td>\n",
+       "      <td>63</td>\n",
+       "      <td>80</td>\n",
+       "      <td>80</td>\n",
+       "      <td>60</td>\n",
+       "      <td>1</td>\n",
+       "      <td>False</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>2</th>\n",
+       "      <td>3</td>\n",
+       "      <td>Venusaur</td>\n",
+       "      <td>Grass</td>\n",
+       "      <td>Poison</td>\n",
+       "      <td>525</td>\n",
+       "      <td>80</td>\n",
+       "      <td>82</td>\n",
+       "      <td>83</td>\n",
+       "      <td>100</td>\n",
+       "      <td>100</td>\n",
+       "      <td>80</td>\n",
+       "      <td>1</td>\n",
+       "      <td>False</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>3</th>\n",
+       "      <td>3</td>\n",
+       "      <td>VenusaurMega Venusaur</td>\n",
+       "      <td>Grass</td>\n",
+       "      <td>Poison</td>\n",
+       "      <td>625</td>\n",
+       "      <td>80</td>\n",
+       "      <td>100</td>\n",
+       "      <td>123</td>\n",
+       "      <td>122</td>\n",
+       "      <td>120</td>\n",
+       "      <td>80</td>\n",
+       "      <td>1</td>\n",
+       "      <td>False</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>4</th>\n",
+       "      <td>4</td>\n",
+       "      <td>Charmander</td>\n",
+       "      <td>Fire</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>309</td>\n",
+       "      <td>39</td>\n",
+       "      <td>52</td>\n",
+       "      <td>43</td>\n",
+       "      <td>60</td>\n",
+       "      <td>50</td>\n",
+       "      <td>65</td>\n",
+       "      <td>1</td>\n",
+       "      <td>False</td>\n",
+       "    </tr>\n",
+       "  </tbody>\n",
+       "</table>\n",
+       "</div>"
+      ],
+      "text/plain": [
+       "   #                   Name Type 1  Type 2  Total  HP  Attack  Defense  \\\n",
+       "0  1              Bulbasaur  Grass  Poison    318  45      49       49   \n",
+       "1  2                Ivysaur  Grass  Poison    405  60      62       63   \n",
+       "2  3               Venusaur  Grass  Poison    525  80      82       83   \n",
+       "3  3  VenusaurMega Venusaur  Grass  Poison    625  80     100      123   \n",
+       "4  4             Charmander   Fire     NaN    309  39      52       43   \n",
+       "\n",
+       "   Sp. Atk  Sp. Def  Speed  Generation  Legendary  \n",
+       "0       65       65     45           1      False  \n",
+       "1       80       80     60           1      False  \n",
+       "2      100      100     80           1      False  \n",
+       "3      122      120     80           1      False  \n",
+       "4       60       50     65           1      False  "
+      ]
+     },
+     "execution_count": 7,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
     "# Your code here:\n",
-    "\n"
+    "pokemon.head()"
    ]
   },
   {
@@ -70,12 +213,23 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
+   "execution_count": 17,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Number of legendary and non legendary Pokemons:\n",
+      "    Legendary  count\n",
+      "0      False    735\n",
+      "1       True     65\n"
+     ]
+    }
+   ],
    "source": [
     "# Your code here:\n",
-    "\n"
+    "print(\"Number of legendary and non legendary Pokemons:\\n\", pokemon['Legendary'].value_counts().reset_index())"
    ]
   },
   {
@@ -87,12 +241,69 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
+   "execution_count": 33,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/html": [
+       "<div>\n",
+       "<style scoped>\n",
+       "    .dataframe tbody tr th:only-of-type {\n",
+       "        vertical-align: middle;\n",
+       "    }\n",
+       "\n",
+       "    .dataframe tbody tr th {\n",
+       "        vertical-align: top;\n",
+       "    }\n",
+       "\n",
+       "    .dataframe thead th {\n",
+       "        text-align: right;\n",
+       "    }\n",
+       "</style>\n",
+       "<table border=\"1\" class=\"dataframe\">\n",
+       "  <thead>\n",
+       "    <tr style=\"text-align: right;\">\n",
+       "      <th></th>\n",
+       "      <th>mean</th>\n",
+       "      <th>std</th>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>Legendary</th>\n",
+       "      <th></th>\n",
+       "      <th></th>\n",
+       "    </tr>\n",
+       "  </thead>\n",
+       "  <tbody>\n",
+       "    <tr>\n",
+       "      <th>False</th>\n",
+       "      <td>417.213605</td>\n",
+       "      <td>106.760417</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>True</th>\n",
+       "      <td>637.384615</td>\n",
+       "      <td>60.937389</td>\n",
+       "    </tr>\n",
+       "  </tbody>\n",
+       "</table>\n",
+       "</div>"
+      ],
+      "text/plain": [
+       "                 mean         std\n",
+       "Legendary                        \n",
+       "False      417.213605  106.760417\n",
+       "True       637.384615   60.937389"
+      ]
+     },
+     "execution_count": 33,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
     "# Your code here:\n",
-    "\n"
+    "pokemon.groupby('Legendary')['Total'].agg(['mean','std'])"
    ]
   },
   {
@@ -106,12 +317,31 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
+   "execution_count": 37,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Test Statistic (t): 25.83\n",
+      "P-Value: 0.0000\n",
+      "\n"
+     ]
+    }
+   ],
    "source": [
     "# Your code here:\n",
-    "\n"
+    "legendary_stats = pokemon[pokemon['Legendary'] == True][\"Total\"].dropna()\n",
+    "non_legendary_stats = pokemon[pokemon['Legendary'] == False][\"Total\"].dropna()\n",
+    "\n",
+    "t_stat, p_value = st.ttest_ind(legendary_stats, non_legendary_stats, equal_var=False)\n",
+    "print(f\"Test Statistic (t): {t_stat:.2f}\")\n",
+    "print(f\"P-Value: {p_value:.4f}\")\n",
+    "print()\n",
+    "\n",
+    "# Significance level\n",
+    "alpha = 0.05"
    ]
   },
   {
@@ -123,12 +353,24 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
+   "execution_count": 39,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Reject the Null Hypothesis: There is sufficient evidence to conclude that the mean stats are different for legendary and non legendary pokemons\n"
+     ]
+    }
+   ],
    "source": [
     "# Your conclusions here:\n",
-    "\n"
+    "\n",
+    "if p_value > alpha:\n",
+    "    print(\"Fail to Reject the Null Hypothesis: The mean stats for legendary and non legendary pokemons are not significantly different.\")\n",
+    "else:\n",
+    "    print(\"Reject the Null Hypothesis: There is sufficient evidence to conclude that the mean stats are different for legendary and non legendary pokemons\")"
    ]
   },
   {
@@ -140,12 +382,42 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
+   "execution_count": 41,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "Type 1\n",
+       "Water       112\n",
+       "Normal       98\n",
+       "Grass        70\n",
+       "Bug          69\n",
+       "Psychic      57\n",
+       "Fire         52\n",
+       "Electric     44\n",
+       "Rock         44\n",
+       "Dragon       32\n",
+       "Ground       32\n",
+       "Ghost        32\n",
+       "Dark         31\n",
+       "Poison       28\n",
+       "Steel        27\n",
+       "Fighting     27\n",
+       "Ice          24\n",
+       "Fairy        17\n",
+       "Flying        4\n",
+       "Name: count, dtype: int64"
+      ]
+     },
+     "execution_count": 41,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
     "# Your code here:\n",
-    "\n"
+    "pokemon['Type 1'].value_counts()"
    ]
   },
   {
@@ -157,12 +429,166 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
+   "execution_count": 52,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/html": [
+       "<div>\n",
+       "<style scoped>\n",
+       "    .dataframe tbody tr th:only-of-type {\n",
+       "        vertical-align: middle;\n",
+       "    }\n",
+       "\n",
+       "    .dataframe tbody tr th {\n",
+       "        vertical-align: top;\n",
+       "    }\n",
+       "\n",
+       "    .dataframe thead th {\n",
+       "        text-align: right;\n",
+       "    }\n",
+       "</style>\n",
+       "<table border=\"1\" class=\"dataframe\">\n",
+       "  <thead>\n",
+       "    <tr style=\"text-align: right;\">\n",
+       "      <th></th>\n",
+       "      <th>mean</th>\n",
+       "      <th>std</th>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>Type 1</th>\n",
+       "      <th></th>\n",
+       "      <th></th>\n",
+       "    </tr>\n",
+       "  </thead>\n",
+       "  <tbody>\n",
+       "    <tr>\n",
+       "      <th>Bug</th>\n",
+       "      <td>378.927536</td>\n",
+       "      <td>117.875223</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>Dark</th>\n",
+       "      <td>445.741935</td>\n",
+       "      <td>109.126217</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>Dragon</th>\n",
+       "      <td>550.531250</td>\n",
+       "      <td>146.267538</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>Electric</th>\n",
+       "      <td>443.409091</td>\n",
+       "      <td>105.721952</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>Fairy</th>\n",
+       "      <td>413.176471</td>\n",
+       "      <td>123.781680</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>Fighting</th>\n",
+       "      <td>416.444444</td>\n",
+       "      <td>102.464378</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>Fire</th>\n",
+       "      <td>458.076923</td>\n",
+       "      <td>109.760496</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>Flying</th>\n",
+       "      <td>485.000000</td>\n",
+       "      <td>161.400124</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>Ghost</th>\n",
+       "      <td>439.562500</td>\n",
+       "      <td>110.072685</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>Grass</th>\n",
+       "      <td>421.142857</td>\n",
+       "      <td>106.650626</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>Ground</th>\n",
+       "      <td>437.500000</td>\n",
+       "      <td>123.913081</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>Ice</th>\n",
+       "      <td>433.458333</td>\n",
+       "      <td>108.281027</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>Normal</th>\n",
+       "      <td>401.683673</td>\n",
+       "      <td>115.733038</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>Poison</th>\n",
+       "      <td>399.142857</td>\n",
+       "      <td>92.358687</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>Psychic</th>\n",
+       "      <td>475.947368</td>\n",
+       "      <td>139.026645</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>Rock</th>\n",
+       "      <td>453.750000</td>\n",
+       "      <td>108.059227</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>Steel</th>\n",
+       "      <td>487.703704</td>\n",
+       "      <td>115.420907</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>Water</th>\n",
+       "      <td>430.455357</td>\n",
+       "      <td>113.188266</td>\n",
+       "    </tr>\n",
+       "  </tbody>\n",
+       "</table>\n",
+       "</div>"
+      ],
+      "text/plain": [
+       "                mean         std\n",
+       "Type 1                          \n",
+       "Bug       378.927536  117.875223\n",
+       "Dark      445.741935  109.126217\n",
+       "Dragon    550.531250  146.267538\n",
+       "Electric  443.409091  105.721952\n",
+       "Fairy     413.176471  123.781680\n",
+       "Fighting  416.444444  102.464378\n",
+       "Fire      458.076923  109.760496\n",
+       "Flying    485.000000  161.400124\n",
+       "Ghost     439.562500  110.072685\n",
+       "Grass     421.142857  106.650626\n",
+       "Ground    437.500000  123.913081\n",
+       "Ice       433.458333  108.281027\n",
+       "Normal    401.683673  115.733038\n",
+       "Poison    399.142857   92.358687\n",
+       "Psychic   475.947368  139.026645\n",
+       "Rock      453.750000  108.059227\n",
+       "Steel     487.703704  115.420907\n",
+       "Water     430.455357  113.188266"
+      ]
+     },
+     "execution_count": 52,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
     "# Your code here:\n",
-    "\n"
+    "\n",
+    "pokemon.groupby('Type 1')['Total'].agg(['mean','std'])"
    ]
   },
   {
@@ -174,12 +600,31 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
+   "execution_count": 43,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Test Statistic (t): -0.44\n",
+      "P-Value: 0.6587\n",
+      "\n"
+     ]
+    }
+   ],
    "source": [
     "# Your code here:\n",
-    "\n"
+    "water_stats = pokemon[pokemon['Type 1'] == 'Water'][\"Total\"].dropna()\n",
+    "non_water_stats = pokemon[pokemon['Type 1'] != 'Water'][\"Total\"].dropna()\n",
+    "\n",
+    "t_stat, p_value = st.ttest_ind(water_stats, non_water_stats, equal_var=True)\n",
+    "print(f\"Test Statistic (t): {t_stat:.2f}\")\n",
+    "print(f\"P-Value: {p_value:.4f}\")\n",
+    "print()\n",
+    "\n",
+    "# Significance level\n",
+    "alpha = 0.05"
    ]
   },
   {
@@ -191,12 +636,24 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
+   "execution_count": 46,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Fail to Reject the Null Hypothesis: The mean stats for water and non water pokemons are not significantly different.\n"
+     ]
+    }
+   ],
    "source": [
     "# Your conclusions here:\n",
-    "\n"
+    "\n",
+    "if p_value > alpha:\n",
+    "    print(\"Fail to Reject the Null Hypothesis: The mean stats for water and non water pokemons are not significantly different.\")\n",
+    "else:\n",
+    "    print(\"Reject the Null Hypothesis: There is sufficient evidence to conclude that the mean stats are different for water and non water pokemons\")"
    ]
   },
   {
@@ -210,12 +667,28 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": [
-    "# Your code here:\n",
-    "\n"
+   "execution_count": 54,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Test Statistic (t): 4.33\n",
+      "P-Value: 0.00001714030347935855799128106180528874347146484070\n",
+      "\n"
+     ]
+    }
+   ],
+   "source": [
+    "# Perform paired t-test\n",
+    "t_stat, p_value = st.ttest_rel(pokemon['Attack'], pokemon['Defense'])\n",
+    "print(f\"Test Statistic (t): {t_stat:.2f}\")\n",
+    "print(f\"P-Value: {p_value:.50f}\")\n",
+    "print()\n",
+    "\n",
+    "# Significance level\n",
+    "alpha = 0.05"
    ]
   },
   {
@@ -227,12 +700,23 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 57,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Reject the Null Hypothesis: There is a significant change in blood pressure after treatment.\n"
+     ]
+    }
+   ],
    "source": [
-    "# Your conclusions here:\n",
-    "\n"
+    "# Decision-Making\n",
+    "if p_value > alpha:\n",
+    "    print(\"Fail to Reject the Null Hypothesis: No significant difference between attack and defense\")\n",
+    "else:\n",
+    "    print(\"Reject the Null Hypothesis: There is a significant difference between attack and defense\")"
    ]
   },
   {
@@ -244,12 +728,28 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
+   "execution_count": 98,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Test Statistic (t): 0.60\n",
+      "P-Value: 0.5458\n",
+      "\n"
+     ]
+    }
+   ],
    "source": [
     "# Your code here:\n",
-    "\n"
+    "t_stat, p_value = st.ttest_ind(pokemon[\"Sp. Atk\"].dropna(), pokemon[\"Sp. Def\"].dropna())\n",
+    "print(f\"Test Statistic (t): {t_stat:.2f}\")\n",
+    "print(f\"P-Value: {p_value:.4f}\")\n",
+    "print()\n",
+    "\n",
+    "# Significance level\n",
+    "alpha = 0.05"
    ]
   },
   {
@@ -261,12 +761,24 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
+   "execution_count": 103,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Fail to Reject the Null Hypothesis: The mean sp.def and sp.atk of pokemons are not significantly different.\n"
+     ]
+    }
+   ],
    "source": [
     "# Your conclusions here:\n",
-    "\n"
+    "\n",
+    "if p_value > alpha:\n",
+    "    print(\"Fail to Reject the Null Hypothesis: The mean sp.def and sp.atk of pokemons are not significantly different.\")\n",
+    "else:\n",
+    "    print(\"Reject the Null Hypothesis: There is sufficient evidence to conclude that the mean sp.def and sp.atk of pokemons are different\")"
    ]
   },
   {
@@ -280,13 +792,31 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": [
-    "# Your code here:\n",
-    "    \n",
-    "    "
+   "execution_count": 95,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Test Statistic (t): 4.33\n",
+      "P-Value: 0.0000\n",
+      "\n",
+      "Reject the Null Hypothesis: There is evidence to say the attack is different from defense.\n"
+     ]
+    }
+   ],
+   "source": [
+    "pokemon['Difference'] = pokemon[\"Attack\"] - pokemon[\"Defense\"]\n",
+    "\n",
+    "t_stat, p_value = st.ttest_1samp(pokemon['Difference'].dropna(), 0)\n",
+    "print(f\"Test Statistic (t): {t_stat:.2f}\")\n",
+    "print(f\"P-Value: {p_value:.4f}\")\n",
+    "print()\n",
+    "if p_value > alpha:\n",
+    "    print(\"Fail to Reject the Null Hypothesis: Not enough evidence to say the attack is different from defense.\")\n",
+    "else:\n",
+    "    print(\"Reject the Null Hypothesis: There is evidence to say the attack is different from defense.\")"
    ]
   },
   {
@@ -302,12 +832,70 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
+   "execution_count": 129,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/html": [
+       "<div>\n",
+       "<style scoped>\n",
+       "    .dataframe tbody tr th:only-of-type {\n",
+       "        vertical-align: middle;\n",
+       "    }\n",
+       "\n",
+       "    .dataframe tbody tr th {\n",
+       "        vertical-align: top;\n",
+       "    }\n",
+       "\n",
+       "    .dataframe thead th {\n",
+       "        text-align: right;\n",
+       "    }\n",
+       "</style>\n",
+       "<table border=\"1\" class=\"dataframe\">\n",
+       "  <thead>\n",
+       "    <tr style=\"text-align: right;\">\n",
+       "      <th>Water Type</th>\n",
+       "      <th>False</th>\n",
+       "      <th>True</th>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>Legendary</th>\n",
+       "      <th></th>\n",
+       "      <th></th>\n",
+       "    </tr>\n",
+       "  </thead>\n",
+       "  <tbody>\n",
+       "    <tr>\n",
+       "      <th>False</th>\n",
+       "      <td>627</td>\n",
+       "      <td>108</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>True</th>\n",
+       "      <td>61</td>\n",
+       "      <td>4</td>\n",
+       "    </tr>\n",
+       "  </tbody>\n",
+       "</table>\n",
+       "</div>"
+      ],
+      "text/plain": [
+       "Water Type  False  True \n",
+       "Legendary               \n",
+       "False         627    108\n",
+       "True           61      4"
+      ]
+     },
+     "execution_count": 129,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
     "# Your code here:\n",
-    "\n"
+    "contingency_table = pd.crosstab(pokemon['Legendary'],pokemon['Type 1'].apply(lambda x: x == 'Water'), colnames=['Water Type'])\n",
+    "contingency_table"
    ]
   },
   {
@@ -319,12 +907,31 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
+   "execution_count": 133,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Chi-squared Statistic: 2.9429200762850503\n",
+      "p-value: 0.08625467249550949\n",
+      "Degrees of Freedom: 1\n",
+      "Expected Frequencies:\n",
+      " [[632.1 102.9]\n",
+      " [ 55.9   9.1]]\n"
+     ]
+    }
+   ],
    "source": [
     "# Your code here:\n",
-    "\n"
+    "chi2, p, dof, expected = st.chi2_contingency(contingency_table)\n",
+    "\n",
+    "# Print results\n",
+    "print(\"Chi-squared Statistic:\", chi2)\n",
+    "print(\"p-value:\", p)\n",
+    "print(\"Degrees of Freedom:\", dof)\n",
+    "print(\"Expected Frequencies:\\n\", expected)"
    ]
   },
   {
@@ -336,12 +943,23 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
+   "execution_count": 136,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Fail to Reject the Null Hypothesis: Not enough evidence to say that are significant difference in frequencies.\n"
+     ]
+    }
+   ],
    "source": [
     "# Your answer here:\n",
-    "\n"
+    "if p_value > alpha:\n",
+    "    print(\"Fail to Reject the Null Hypothesis: Not enough evidence to say that are significant difference in frequencies.\")\n",
+    "else:\n",
+    "    print(\"Reject the Null Hypothesis: There is evidence to say that are significant difference in frequencies.\")"
    ]
   },
   {
@@ -354,7 +972,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3",
+   "display_name": "Python 3 (ipykernel)",
    "language": "python",
    "name": "python3"
   },
@@ -368,9 +986,9 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.6.9"
+   "version": "3.12.4"
   }
  },
  "nbformat": 4,
- "nbformat_minor": 2
+ "nbformat_minor": 4
 }