In a local teaching district, a technology grant is available to teachers in order to install a cluster of four computers in their classroom. From the 6,250 teachers in the district, 250 were randomly selected and asked if they felt that computers were an essential teaching tool for their classroom. Of those selected, 142 teachers felt that computers were an essential teaching tool. Then they asked us, calculate a 99% confidence interval for the proportion of teachers who felt that computers are an essential teaching tool. Let's think about the entire population. We weren't able to survey all of them, but the entire population, some of them fall into the bucket and we'll define that as 1. They thought it was a good tool.