A car speedometer has a 4% uncertainty. What is the range of possible speeds (in km/h) when it reads 60 km/h?
Solution:
Uncertainty = 4 * 60 / 100 = 2.4 km/h
=> range = 60 - 2.4 to 60+2.4
=> rand = 57.6 - 62.4 km/h
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