And then the population standard deviation, let me write this over here in yellow. The population standard deviation, assuming our null hypothesis, and we've seen this when we first learned about Bernoulli distributions. It is going to be the square root of the percentage of the population that has internet access, so 0.3, times the proportion of the population that does not have internet access, times 0.7 right over here. So this would be the square root of 0.21. And we could deal with this later using our calculator. Now, with that out of the way, we want to figure out the probability of getting a sample proportion that has of 0.38. So let's look at the distribution of sample proportions.