A sample produces x-bar = 7 with an error bound of EBM = 2.5. What is the resulting confidence interval?

1. A confidence interval takes the form (x-bar - EBM, x-bar + EBM). 2. Lower bound: 7 - 2.5 = 4.5. 3. Upper bound: 7 + 2.5 = 9.5. 4. Options B and D only apply the error bound to one side of x-bar instead of both, so they are incomplete. _Source: OpenStax Introductory Statistics (CC BY 4.0), Ch 8 "Confidence Intervals", section 8.1 A Single Population Mean using the Normal Distribution_