概率论假设检验题目设某炼铁厂铁水的含碳量服从正态分布N(,0.12).现测定了9炉铁水,得平均含碳量为4.4,试以=0.10的水平,检验此种铁水的平均含碳量 是否为4.5.
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![概率论假设检验题目设某炼铁厂铁水的含碳量服从正态分布N(,0.12).现测定了9炉铁水,得平均含碳量为4.4,试以=0.10的水平,检验此种铁水的平均含碳量 是否为4.5.](/uploads/image/z/8281325-29-5.jpg?t=%E6%A6%82%E7%8E%87%E8%AE%BA%E5%81%87%E8%AE%BE%E6%A3%80%E9%AA%8C%E9%A2%98%E7%9B%AE%E8%AE%BE%E6%9F%90%E7%82%BC%E9%93%81%E5%8E%82%E9%93%81%E6%B0%B4%E7%9A%84%E5%90%AB%E7%A2%B3%E9%87%8F%E6%9C%8D%E4%BB%8E%E6%AD%A3%E6%80%81%E5%88%86%E5%B8%83N%28%26%2361549%3B%2C0.12%29.%E7%8E%B0%E6%B5%8B%E5%AE%9A%E4%BA%869%E7%82%89%E9%93%81%E6%B0%B4%2C%E5%BE%97%E5%B9%B3%E5%9D%87%E5%90%AB%E7%A2%B3%E9%87%8F%E4%B8%BA4.4%2C%E8%AF%95%E4%BB%A5%26%2361537%3B%3D0.10%E7%9A%84%E6%B0%B4%E5%B9%B3%2C%E6%A3%80%E9%AA%8C%E6%AD%A4%E7%A7%8D%E9%93%81%E6%B0%B4%E7%9A%84%E5%B9%B3%E5%9D%87%E5%90%AB%E7%A2%B3%E9%87%8F+%26%2361549%3B+%E6%98%AF%E5%90%A6%E4%B8%BA4.5.)
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