Question

An infants pulse rate is measured to be 123 ± 5 beats/min. What are the uncertainty and the percent uncertainty in this measurement? Uncertainty Number Percent Uncertainty beats Number min

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Answer #1

uncertainity = delta A / A

= 5 / 123 = 0.0407 beats/min

Percent uncertainty  = delta A / A * 100 %

= [ 5 beats/min / 123 beats/min ] * 100 %

percent uncertainty = 4.07 %

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