To study the effect of $X_1$ and $X_2$ on Y, the following regression model is estimated using a large sample:
$ Y = a + \beta_1 X_1 + \beta_2X_2 + ∈ $
The OLS estimates and standard errors are presented below:
| | $a$ | $\beta_1$ | $\beta_2$ |
| Estimates | 2.3 | 0.39 | 1.8 |
| Standard errors | 1.15 | 0.13 | 1 |
Given the above information, which of the following is CORRECT?