The answer is below.
Work Step by Step
The given interval is: $$23 \pm 3.6 \\ Between \ 19.4 \ and \ 26.6 \ percent$$
You can help us out by revising, improving and updating this answer.Update this answer
After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.