108 said not good, or you could view them as you were sampling a 0. 108 plus 142 is 250. What is our sample mean here? 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.