We could pick a one then a two, a one and a three. We could pick a two and then a one. We could pick a two and a two, a two and a three. We could pick a three and a one, a three and a two, or three and a three. There's three possible balls for the first pick and three possible balls for the second because we're doing it with replacement. And so what is the sample mean in each of these for all of these combinations? So for this one, the sample mean is one.