What would that be? If you add 0.08 to this right over here, at the upper end, you're going to have 0.648, and at the lower end of our range, so this is the upper end, the lower end, if we subtract 8 from this, we get 0.488. We are 99% confident that the true population proportion is between these two numbers. Or another way, that the true percentage of teachers who think those computers are good ideas is between. We're 99% confident, we're confident that there's a 99% chance that the true percentage of teachers that like the computers is between 48.8% and 64.8%. Now, that we answered the first part of the question. The second part, how could the survey be changed to narrow the confidence interval, but to maintain the 99% confidence interval?