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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

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. Is the 25% a parameter or statistic? If statistic, is it a descriptive or inferential statistic

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