NO.PZ2020010801000014
问题如下:
If and its 95% confidence interval is [0.43,1.67], what is the t-statistic of ? What is the p-value of the t-statistic?
选项:
解释:
The standard error is(1.67 - 0.43)/(2 * 1.96)= 0.316.
The t-stat is then 3.31.
The two-sided p-value is 2(1- Φ(|t|))=0.09%
老师好,题目不是说在t分布下计算吗?为什么在用区间值求解的时候,95%置信度下t(α/2)会取1.96?而不是给自由度去查表。1.96不是Z分布下的查表所得吗?