Matilda has constructed three confidence intervals, all from the same random sample. The confidence levels are 95%, 98%, and 99.9%. The confidence intervals are 6.4 < μ < 12.3, 5.1 < μ < 13.6, and 6.8 < μ < 11.9. Unfortunately, Matilda has forgotten which confidence interval has which level. Match each confidence interval with its level.