当x=MΘ=M0时,其总体分布的状况为()。A、钟型分布B、对称的钟型分布C、对称的U形分布D、U形分布

当x=MΘ=M0时,其总体分布的状况为()。

  • A、钟型分布
  • B、对称的钟型分布
  • C、对称的U形分布
  • D、U形分布

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