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What are the fractional uncertainties in two measurements

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Question: To measure the activity of a radioactive sample, two students count the alpha particles it emits. Student A watches for 3 minutes and counts 28 particles; Student B watches for 30 minutes and counts 310 particles.

(a) What should Student A report for the average number emitted in 3 minutes, with his uncertainty?

(b) What should Student B report for the average number emitted in 30 minutes, with her uncertainty?

(c) What are the fractional uncertainties in the two measurements? Comment.

Reference no: EM131550110

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