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18) The student calculates the following values of g with the set-up described above: 8.7, 8.9,9.7, and 10.0 m/s^2. What result should they report? a) 9.325 +/-0.624 m/s^2 b) 9.3

+/- 0.6 m/s^2 c) 9.3 +/- 0.5 m/s^2 d) 9.32 +/- 0.49 m/s^2 e) none of these

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