A city's sanitation department implements a new requirement that all applicants for waste collection jobs must pass a written general intelligence test. This new policy results in a significantly lower percentage of applicants from a particular racial minority group being hired compared to other groups. The department has not conducted any studies to prove that a high score on this test correlates with an employee's ability to perform the essential duties of the job, such as operating machinery and physical labor. Which statement best analyzes the legality of this new requirement?

Evaluating a Hiring Policy