Question

An infant’s pulse rate is measured to be 130±5 beats/min. What is the percent uncertainty in this measurement?

a) 3.85%
b) 4.00%
c) 3.25%
d) 4.50%

Answer 1

The percent uncertainty of the infant's pulse rate, measured as 130 ± 5 beats/min, is calculated to be 3.85%.

Step-by-step explanation:

The question asks for the percent uncertainty of an infant's pulse rate, which is measured to be 130 ± 5 beats/min. To find the percent uncertainty, we divide the uncertainty by the measured value and then multiply by 100 to convert it into a percentage.

Percent Uncertainty = (Uncertainty / Measured Value) × 100%

Percent Uncertainty = (5 beats/min / 130 beats/min) × 100%

Percent Uncertainty = 0.03846... × 100%

Percent Uncertainty = 3.85%

Thus, the answer is (a) 3.85%, as this is the calculated percent uncertainty of the infant's pulse rate measurement.