A candidate delta is -1 percentage point, the allowed regression is -2 points, and the co…

A candidate delta is -1 percentage point, the allowed regression is -2 points, and the confidence interval is [-4, +2]. What should the gate report?

1. Inconclusive, because the interval includes both allowed and forbidden changes
2. Pass, because the point estimate is above -2 points
3. Fail, because the interval includes -4 points
4. Pass, because the interval also includes an improvement