The average annual us per capita consumption of iceberg, Ask an Expert

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The average annual U.S. per capita consumption of iceberg lettuce has been estimated as 24.3 pounds. The annual per capita consumption 2 years earlier had been estimated as 21.6 pounds. Could either or both of these consumption figures be considered a point estimate?

Could the difference between the two consumption figures be considered an interval estimate? Explain your reasoning in both cases.

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