A number of years ago, the road and highway maintenance department of Sin City, Nevada, began recruiting minority group members through an affirmative action program. In terms of efficiency ratings as compiled by their superiors, how do the affirmative action employees rate? The ratings of random samples of both groups were collected, and the results are reported here (higher ratings indicate greater efficiency).
![1290_ratings of random samples.png](https://secure.tutorsglobe.com/CMSImages/1290_ratings of random samples.png)
Write a sentence or two of interpretation.