(b) an infants pulse rate is measured to be 130 ± 5 beats/min. what is the percent uncertainty in this…

Explanation:

Step1: Recall percent - uncertainty formula

The formula for percent uncertainty is $\text{Percent Uncertainty}=\frac{\text{Uncertainty}}{\text{Measured Value}}\times100%$.

Step2: Identify values

The measured value of the infant's pulse rate is $130$ beats/min and the uncertainty is $5$ beats/min.

Step3: Calculate percent uncertainty

Substitute the values into the formula: $\text{Percent Uncertainty}=\frac{5}{130}\times 100%$. [ \begin{align*} \frac{5}{130}\times 100%&=\frac{500}{130}%\ &\approx 3.85% \end{align*} ]

Answer:

$3.85%$