Use the t statistic of Theorem 8 to construct a (1 - α)100% confidence interval formula for βi for i = 0, 1, ... , k.
Theorem 8
Under the assumptions of normal multiple regression analysis,
![](https://test.transtutors.com/qimg/1d2d5205-f92c-4618-add9-7c2badaebaf3.png)
are values of random variables having the t distribution with n - k - 1 degrees of freedom.