So actually, let me just round that up as 0.50. So my sample standard deviation is 0.50. Now, if you just look at this, you say, OK, well your best estimate of the percentage of people voting for A or B is really what you just saw here. Your best estimate of the mean is that 43% of people are going to vote for B and everyone else is going to vote for A. But an interesting question is, how good of a sample is that? And let's take it to the next level. Let's try to think of an interval around 43% for which we are 95% we're reasonably confident, or roughly 95% sure, that the real mean is in that interval.