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 成人高等教育 / 概率论与数理统计
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一批产品中有一、二、三等品,等外品及废品五种,其产值分别为每件6元,5.4元,5元,4元及0元,相应的概率分别为0.70.10.10.060.04。则该批产品的平均产值为()。


  • A、

    6.12

  • B、

    5.96

  • C、

    4.62

  • D、

    5.68

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