采用正态近似法估计总体率的95%置信区间,其公式为

A、p-1.96S/[img=~/QImg/2013-10-14-10-46-38/image031.jpg],p+1.96S/[img=~/QImg/2013-10-14-10-46-38/image031.jpg])
B、p-2.58S/[img=~/QImg/2013-10-14-10-46-38/image031.jpg],p+2.58S/[img=~/QImg/2013-10-14-10-46-38/image031.jpg])
C、p-1.96S[img=~/QImg/2013-10-14-10-46-38/image032.jpg],p+1.96S[img=~/QImg/2013-10-14-10-46-38/image032.jpg])
D、p-2.58S[img=~/QImg/2013-10-14-10-46-38/image032.jpg],p+2.58S[img=~/QImg/2013-10-14-10-46-38/image032.jpg])
E、p-1.96S,p+1.96S)