We have 1 times 142 plus 0 times 108 divided by our total number of samples, divided by 250. It is equal to 142 over 250. You could even view this as the sample proportion of teachers who thought that the computers were a good teaching tool. Let me get a calculator out to calculate this. We have 142 divided by 250 is equal to 0.568. Our sample proportion is 0.568, or 56.8% either one. 0.568.