(来学网)某地高血压的患病率约为20%,抽样调查时至少需调查人数为(设α=0.05d=0.1P)()
  • A.
    (来学网)1600
  • B.
    (来学网)2000
  • C.
    (来学网)3600
  • D.
    (来学网)4000
  • E.
    (来学网)5000