概率论与数理统计的填空题:填空题:1.掷一枚硬币,令Ai表示"第i次为正面朝上",i=1,2,3.则A1UA2UA3表示事件为?2.已知随机变量X只能取0,1,2三个数值,其相应概率依次为1/2c,5/4c,3/12c,则C=?3.设随机变量X
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![概率论与数理统计的填空题:填空题:1.掷一枚硬币,令Ai表示](/uploads/image/z/10185830-62-0.jpg?t=%E6%A6%82%E7%8E%87%E8%AE%BA%E4%B8%8E%E6%95%B0%E7%90%86%E7%BB%9F%E8%AE%A1%E7%9A%84%E5%A1%AB%E7%A9%BA%E9%A2%98%3A%E5%A1%AB%E7%A9%BA%E9%A2%98%3A1.%E6%8E%B7%E4%B8%80%E6%9E%9A%E7%A1%AC%E5%B8%81%2C%E4%BB%A4Ai%E8%A1%A8%E7%A4%BA%22%E7%AC%ACi%E6%AC%A1%E4%B8%BA%E6%AD%A3%E9%9D%A2%E6%9C%9D%E4%B8%8A%22%2Ci%3D1%2C2%2C3.%E5%88%99A1UA2UA3%E8%A1%A8%E7%A4%BA%E4%BA%8B%E4%BB%B6%E4%B8%BA%3F2.%E5%B7%B2%E7%9F%A5%E9%9A%8F%E6%9C%BA%E5%8F%98%E9%87%8FX%E5%8F%AA%E8%83%BD%E5%8F%960%2C1%2C2%E4%B8%89%E4%B8%AA%E6%95%B0%E5%80%BC%2C%E5%85%B6%E7%9B%B8%E5%BA%94%E6%A6%82%E7%8E%87%E4%BE%9D%E6%AC%A1%E4%B8%BA1%2F2c%2C5%2F4c%2C3%2F12c%2C%E5%88%99C%3D%3F3.%E8%AE%BE%E9%9A%8F%E6%9C%BA%E5%8F%98%E9%87%8FX)
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