If it is less than 5%, we're going to reject the null hypothesis. So let's first of all figure out our z score. So we're assuming the null hypothesis, p1 is equal to p2. Our z score, the number of standard deviations that our actual result is away from the mean, the actual difference that we sampled in the last few videos between the men and the women, was 0.051. And from that, we're going to subtract the assumed mean. Remember, we're assuming that these two things are equal. So the mean of this sampling distribution right here is 0.