Question 1165662
The **margin of error (ME)** is the half-width of the confidence interval.

You can calculate the margin of error by subtracting the lower bound from the upper bound and dividing the result by two.

$$\text{Margin of Error (ME)} = \frac{\text{Upper Bound} - \text{Lower Bound}}{2}$$

Given the $95\%$ confidence interval is $10.76$ to $12.24$ years:

$$\text{ME} = \frac{12.24 - 10.76}{2}$$

$$\text{ME} = \frac{1.48}{2}$$

$$\mathbf{\text{ME} = 0.74 \text{ years}}$$

The margin of error of the estimate is **0.74 years**.