Question

He is still unconvinced about the reliability of using economic models to make business decisions. you can answer this concern by sharing that you will confirm the accuracy of the model by

Answer 1

I believe the answer is testing its predictions with empirical data..
Empirical data refers to Data/information that's gotten from reliable source of observation or measurement.
In econimic models, empirical data will provide the information that is the closest to depict the situation in the current market.