A recent poll of 1250 senior citizens in the US determined t

A recent poll of 1250 senior citizens in the US determined that senior citizens who live in states with abundant sunlight have 25% better recall on memory tests than those who live in states without abundant sunlight. Identify the sample. What is the implied population? Is the 25% a parameter or statistic?

Solution

senior citizens who live with abundant sunlight living in United States

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Population is all the senior citizens

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25% is a statistic as arrived from sample