04-Intervalo de confiança.ipynb

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   "source": [
    "import pandas as pd\n",
    "import numpy as np\n",
    "import seaborn as sns\n",
    "from scipy import stats\n",
    "from scipy.stats import norm"
   ]
  },
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   "cell_type": "markdown",
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   "metadata": {},
   "source": [
    "# Exercício 1 "
   ]
  },
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   "execution_count": 2,
   "id": "05ddbe15",
   "metadata": {},
   "outputs": [],
   "source": [
    "dados_salario = np.array([82.1191, 72.8014, 79.1266, 71.3552, 59.192 , 79.1952, 56.518 ,\n",
    "                          70.3752, 73.5364, 61.0407, 64.3902, 66.4076, 63.5215, 71.9936,\n",
    "                          60.1489, 78.5932, 76.0459, 67.7726, 64.6149, 80.1948, 76.7998,\n",
    "                          76.1831, 80.7065, 62.4953, 57.204 , 62.5408, 80.0982, 63.287 ,\n",
    "                          66.5826, 79.3674])"
   ]
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  {
   "cell_type": "code",
   "execution_count": 5,
   "id": "6d8dd70b",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "70.14025666666666"
      ]
     },
     "execution_count": 5,
     "metadata": {},
     "output_type": "execute_result"
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   "source": [
    "media = dados_salario.mean()\n",
    "media"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "id": "9697840f",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "7.899834598255137"
      ]
     },
     "execution_count": 6,
     "metadata": {},
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   ],
   "source": [
    "dp = np.std(dados_salario)\n",
    "dp"
   ]
  },
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   "execution_count": 12,
   "id": "5873e271",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "(67.26506308375339, 73.01545024957993)"
      ]
     },
     "execution_count": 12,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "intervalos = norm.interval(0.95, media, stats.sem(dados_salario))\n",
    "intervalos"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "e70ae5e5",
   "metadata": {},
   "source": [
    "Temos 95% de confiança de que a média salárial das pessoas está no intervalo entre 67.26 e 73.02"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 16,
   "id": "67e385b9",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "2.875193582913269"
      ]
     },
     "execution_count": 16,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "amplitude = media - intervalos[0]\n",
    "amplitude"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "8be01341",
   "metadata": {},
   "outputs": [],
   "source": []
  }
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