(来学网)某地高血压的患病率约为40%,抽样调查时至少需调查人数为(设α=0.05d=0.1p)
  • A.
    (来学网)400
  • B.
    (来学网)460
  • C.
    (来学网)500
  • D.
    (来学网)560
  • E.
    (来学网)600
正确答案:
E