(来学网)正态曲线拐点所对应的横坐标是
  • A.
    (来学网)±2.58s
  • B.
    (来学网)±1.96s
  • C.
    (来学网)μ±σ
  • D.
    (来学网)μ+1.96σ
  • E.
    (来学网)μ+2.58σ
正确答案:
C