Introductory Statistics 9th Edition

Published by Wiley
ISBN 10: 1-11905-571-7
ISBN 13: 978-1-11905-571-6

Chapter 8 - Section 8.2 - Estimation of a Population Mean: σ Known - Exercises - Page 322: 8.8

Answer

The margin of error for the estimate of $\mu$ , denoted by E, is the quantity that is subtracted from and added to the value of $\bar{x}\ $ to obtain a confidence interval for $\mu$ . Thus , $E = zσ_{\bar{x}\ }$

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