A regression analysis was carried out to determine whether wages increase for blue-collar workers depending on the extent to which firms that employ them engage in product exportation. The sample consisted of 585,692 German blue-collar workers.

For each of these workers, the income was known as well as the percentage of the work that was related to exportation. The regression slope estimate was 0.009, and the t-statistic value was 1.51.8 Carefully interpret and explain these findings.