Why not? Table 11.1 (page 218) records the percentage of residents aged 65 or older in each of the 50 states. You can check that this percentage is 14% or higher in 8 of the states. So the sample proportion of states with at least 14% of elderly residents is ^p = 8/50 = 0.16. Explain why it does not make sense to go on to obtain a 95% confidence interval for the population proportion p. (Hint:

See pages 456–457, 506.)