A large multinational corporation is accused of discriminatory hiring practices, tending to hire male employees who are 25 to 30 years old. After management agree to offer a series of human resource trainings at their various locations, in-house staff examine and analyze their most current hiring data. They look at a sample of 2,000 new employees and find that a higher proportion of female employees have been recently hired, and the difference is statistically significant. Which of the following best describes how we should interpret these results?