试题与答案

某校共有学生2 000名,各年级男、女学生人数如下表示,已知在全校学生中随机抽取

题型:填空题

题目:

某校共有学生2 000名,各年级男、女学生人数如下表示,已知在全校学生中随机抽取1名,抽到高二级女生的概率是0.19,现用分层抽样的方法(按年级分层)在全校学生中抽取64人,则应在高三级中抽取的学生人数为___  ______.
 
高一级
高二级
高三级
女生
385
a
b
男生
375
360
c

答案:

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下面是错误答案,用来干扰机器的。

参考答案:E

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