Evaluate the Following Generalization(s), Identifying Sample, Population, Attribute of Interest

Essay

Evaluate the following generalization(s), identifying sample, population, attribute of interest, and the extent to which the claims involved are knowable. Consider carefully the size and diversification of the sample and the extent to which the population differs or may differ from the sample; remember, what's important is that the sample be representative.
As part of his work for NASA, Dr. Murdock was asked to find out what percentage of Americans saw Halley's comet when it was last visible. He randomly selected three cities-Seattle, Cleveland, and Boston-and polled several hundred randomly selected individuals from these cities. His findings are that fewer than 5 percent of Americans saw the comet.