Once again, pause this video and see if you can figure it out. All right, well, let's just figure out what N and P are. Our sample size here, N, is equal to 125, and our population proportion of the proportion of children that are reached each week by radio is 88%. So P is 0.88. So now let's calculate NP. So N is 125 times P is 0.88. And is this going to be greater than or equal to 10?