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Two students weighed a 125-ml beaker that had a mass of 80.562g on a calibrated top-loading balance. Each student used their own top-loading balance, recorded three mass readings for the beaker, and then determined the average. Below are the results: Student A Student B 80,560 80,400 80,555 79,551 80,565 81,729 A) Find the Averages B) Which set of results matches the known mass of the beaker? C) Which set of results is more precise? D) Which student has the more reliable balance?

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