A household keeps track of the number of children that have come to their house on Halloween for the last twenty years: 150, 175, 160, 145, 100, 125, 130, 200, 175, 190, 155, 185, 210, 220, 160, 145, 135, 110, 100, and 150. Compare the sample mean to the population mean. Which sample mean is the farthest from the population mean? first five years first ten years last five years last ten years