We got 142 1's, or we sampled 1 142 times from this distribution. Then the rest of the times, what's left over? There's another 108 who said that it's not good. 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.