Core Chocolate Company, a major producer of specialty chocolate sold throughout the United States, employs one hundred workers at its principal processing plant. The plant is located in Heartland Corners, which has a population that is 50 percent white and 25 percent African American, with the balance Hispanic American, Asian American, and others. Core requires a high school diploma as a condition of employment for its cleaning crew. Three-fourths of the white population completed high school, compared with only one-fourth of those in the minority groups. Core has an all-white cleaning crew. Has Core violated the Civil Rights Act of 1964? Explain.