应用统计学视频
https://www.bilibili.com/video/av9051072
应用统计学课件
https://www.docin.com/p-106804331.html?docfrom=rrela
t分布理解
http://www.360doc.com/content/18/0208/12/15930282_728577832.shtml
t检验理解
http://www.360doc.com/content/17/0523/18/40087574_656536995.shtml
区间估计和假设检验的关系
https://wenku.baidu.com/view/aa7dee0fe87101f69e319545.html
