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,*,创 新 方 案 系 列 丛 书,新课标高考总复习,数学,第十一章 计数原理、概率、随机变量及其分布,1/72,第九节 离散型随机变量的均值与方差、正态分布,2/72,3/72,4/72,平均水平,偏离,5/72,aE,(,X,),b,a,2,D,(,X,),p,(,p,为成功概率,),np,p,(1,p,),np,(1,p,),6/72,7/72,上方,x,1,x,8/72,越小,越大,9/72,0.682 6,0.954 4,0.997 4,10/72,11/72,12/72,13/72,14/72,15/72,16/72,17/72,18/72,19/72,20/72,21/72,22/72,23/72,24/72,25/72,26/72,27/72,28/72,29/72,30/72,31/72,32/72,33/72,34/72,35/72,36/72,37/72,38/72,39/72,40/72,41/72,42/72,43/72,44/72,45/72,46/72,47/72,48/72,49/72,50/72,51/72,52/72,53/72,54/72,55/72,56/72,57/72,58/72,59/72,60/72,61/72,62/72,63/72,64/72,65/72,66/72,67/72,68/72,69/72,70/72,71/72,72/72,
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