Homework/Day_33_HW.ipynb

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    "## 作業:\n",
    "某工廠想知道兩條不同的生產線的產品不良率是否有所不同，由兩條生產線中各抽取 300 個樣本，第一組有  75 個不良品，第二組有 30 個不良品，我們可以宣稱生產線所生產出的產品不良率不相同? (以 0.05 為顯著水準)?    \n",
    "(提示:透過課程投影片的步驟，需思考 $𝐻_0$、 $𝐻_1$ 的寫法和範例不同唷。)   \n",
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    "# library\n",
    "import numpy as np\n",
    "import pandas as pd\n",
    "from scipy import stats\n",
    "import math\n",
    "import statistics\n",
    "import matplotlib.pyplot as plt\n",
    "import seaborn as sns"
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      "p-value = 0.0000013319\n"
     ]
    }
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   "source": [
    "import statsmodels.stats.proportion\n",
    "\n",
    "A = [ 75, 30 ] \n",
    "B = [ 300, 300 ] \n",
    "result = statsmodels.stats.proportion.proportions_ztest( A, B, alternative='two-sided' )\n",
    "\n",
    "print( 'p-value =' , '{:.10f}'.format(result[1]) )"
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    "### Ans: $\\text{p-value} = 0.0000013319$ $<$ $\\alpha=0.05$ 拒絕 $H_0$，故兩生產線的不良率不同。"
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