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. So you could literally look at every combination of getting 150 households from this, and you would actually get a binomial distribution. And we've also seen this before. You would actually get a binomial distribution where you'd get a bunch of bars like that.