Statistics for Business & Economics, Revised (with XLSTAT Education Edition Printed Access Card)
Statistics for Business & Economics, Revised (with XLSTAT Education Edition Printed Access Card)
13th Edition
ISBN: 9781337094160
Author: David R. Anderson, Dennis J. Sweeney, Thomas A. Williams, Jeffrey D. Camm, James J. Cochran
Publisher: Cengage Learning
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Chapter 22.4, Problem 1E

Simple random sampling was used to obtain a sample of n = 50 elements from a population of N = 800. The sample mean was x ¯ = 215 , and the sample standard deviation was found to be s = 20.

  1. a. Estimate the population mean.
  2. b. Estimate the standard error of the mean.
  3. c. Develop an approximate 95% confidence interval for the population mean.
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