Express the confidence interval

Question

Express the confidence interval 60.1%±3.8%60.1%±3.8% in interval form.

Answer 1

Interval form uses upper and lower boundaries.

Upper boundary is 60.1% + 3.8%

Lower boundary is 60.1% - 3.8%

Then, in brackets: [ lower bound, upper bound ]

Just like an interval of domain or range from algebra!