====== 相关组总体均值差异的估计 Estimates of differences in the population means of the relevant groups======
1.求出两总体均值的点估计 \\Find a point estimate of the two population means：
{{::相关组估计点估计.png?100|}}

2.用标准误估计差异样本均值的方差 \\Use the standard error to estimate the difference of sample means：
{{::相关组估计标准误-1.png?80|}}={{::相关组估计标准误-2.png?50|}}

3.求出枢轴量 Calculate the pivot quantity：
{{::相关组估计t统计量.png?100|}}

4.根据置信区间求出t的临界值t<sub>0</sub>。
\\Find the critical value of t according to the confidence interval

5.根据式子：\\
{{ ::相关组估计置信区间.png?200 |}}\\
求出置信区间
\\Find the confidence interval.