Proportion of US Residents Less than 25 Years Old The US Census indicates that 35 % of US residents are less than 25 years old. Figure 1 shows possible sampling distributions for the proportion of a sample less than 25 years old, for samples of size n = 20, n = 100, and n = 500. A H C 0.0 0.1 0.2 03 0.4 0.5 0.6 0.7 Figure 1 Match the dotplots with the sample size (a) Which distribution goes with which sample size? 1 = 20 Graph A v n = 100 Graph B v n = 500 Graph C v