Write the Word or Phrase That Best Completes Each Statement $9.65 < \mu < 11.35$

Write the word or phrase that best completes each statement or answers the question.
-Define margin of error. Explain the relation between the confidence interval and the margin of error. Suppose a confidence interval is $9.65 < \mu < 11.35$ . Find the sample mean $\bar { x }$ and the margin of error $E$ .