As part of its ongoing effort to lead the nation to discover and rediscover the classics, the American Film Institute (AFI) conducted a survey on the greatest American screen legends. AFI defines an American screen legend as " an actor or a team of actors with a significant screen presence in American feature-length films whose screen debut occurred in or before 1950, or whose screen debut occurred after 1950 but whose death has marked a completed body of work." AFI polled 1800 leaders from the American film community, including artists, historians, critics, and other cultural dignitaries. Each of these leaders was asked to choose the greatest American screen legends from a list of 250 nominees in each gender category, as compiled by AFI historians.
a. Identify the population
b. identify the sample