(来学网)标准正态曲线下,横轴上,从0到1.96的面积为
  • A.
    (来学网)95%
  • B.
    (来学网)99%
  • C.
    (来学网)47.5%
  • D.
    (来学网)49.5%
  • E.
    (来学网)97.5%