![](https://cos-cdn.shuashuati.com/pipixue-web/2020-1231-2005-12/ti_inject-812ce.png)
Consider a least squares regression line given by Y = 5.25 + 2.3X, where and . As a general rule-of-thumb, a manager can be 95 percent confident that the true value of the underlying parameter estimate, , is contained in which of the following intervals?