问题如下：
a. Is statistically significant when using a 5% test?
选项：
解释：
Yes. The null hypothesis value of is not in the confidence interval, and so the null is rejected using a test size of 10%.
using a 5% test 的5%跟90%是什么关系，各自的含义是什么，老师
NO.PZ202001080100001301 问题如下 Is β\betstatistically significant when using a 5% test? Yes. The null hypothesis value of H0:β=0H_0:\beta = 0H0:β=0 is not in the confininterval, anso the null is rejecteusing a test size of 10%. 我第一反应就是using a 5% test表示双尾一共5%，也就是两边各2.5%之前假设检验的时候也是这么教的呀
NO.PZ202001080100001301问题如下Is β\betstatistically significant when using a 5% test? Yes. The null hypothesis value of H0:β=0H_0:\beta = 0H0:β=0 is not in the confininterval, anso the null is rejecteusing a test size of 10%.这道题的5%我第一直觉是把它等同于置信水平=95%了，虽然这样想的话这道题没法做，但是怎么区分他给的单尾概率还是双尾呀？
NO.PZ202001080100001301 请问为什么可以拿null hypo假设的值和confininterval直接做比较？谢谢
using a 5% test 指的是α/2等于5%吗，这块不太理解，请老师讲透彻一些
