If we look at it superficially, it looks like the low-fat group lost more weight, just based on our samples, than the control group. If we take the difference of the low-fat group, or between the low-fat group and the control group, we get 9.31 minus 7.40 is equal to 1.91. The difference of our samples is 1.91. So just based on what we see, it says maybe you lose an incremental 1.91 pounds every 4 months if you are on this diet. What we want to do in this video is to get a 95% confidence interval around this number to see that in that 95% confidence interval, maybe do we always lose weight? Or is there a chance that we can actually go the other way with the low-fat diet? So really, just this video, 95% confidence interval.