The x-axis represents the trial, and the y-axis represents the number of defective lightbulbs.

For quality control, a company that manufactures lightbulbs conducted five different trials. In each trial, 500 different lightbulbs were tested. The bar graph above shows the number of defective lightbulbs found in each trial. If, due to a manufacturing error, the number of defective lightbulbs in each of the five trials was actually twice what is shown in the graph, what would be the new mean number of defective lightbulbs for the five trials?