Why would a country's leaders want to know the proportion of the population in different age group? What difference does the age of the people in a country make?
Is it important for a government leader or planner to know the age of the population they are serving?

Francine, a college freshman, has agreed to participate in a psychology research study. before she begins her participation, she reads a statement written by the researcher explaining the purpose of the research and the potential risks of participation. it also explains that francine is free to withdraw from the research at any time. in providing francine with this statement, the researcher has followed the ethical guidelines of for participants.