EBK STATISTICS FOR BUSINESS & ECONOMICS
EBK STATISTICS FOR BUSINESS & ECONOMICS
12th Edition
ISBN: 9780100460461
Author: Anderson
Publisher: YUZU
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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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