Calculate the uncertainty level under a 99 of confidence

A certain length measurement is made with the following results:

Reading: 1 2 3 4 5 6 7 8 9 10

x, m: 12.54 12.73 12.44 12.51 12.52 12.84 12.49 12.67 12.55 12.53

Calculate the uncertainty level under a 99% of confidence, and the probability that a single measurement will be between 12.5m and 12.6m.

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Calculate the uncertainty level under a 99 of confidence : a certain length measurement is made with the following resultsreading 1 2 3 4 5 6 7 8 9 10x m 12.54 12.73 12.44 12.51

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