Essentials Of Statistics For Business & Economics
Essentials Of Statistics For Business & Economics
9th Edition
ISBN: 9780357045435
Author: David R. Anderson, Dennis J. Sweeney, Thomas A. Williams, Jeffrey D. Camm, James J. Cochran
Publisher: South-Western College Pub
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Chapter 7.5, Problem 18E

A population has a mean of 200 and a standard deviation of 50. A sample of size 100 will be taken and the sample mean x ¯ will be used to estimate the population mean.

  1. a. What is the expected value of x ¯ ?
  2. b. What is the standard deviation of x ¯ ?
  3. c. Show the sampling distribution of x ¯ .
  4. d. What does the sampling distribution of x ¯ show?
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Chapter 7 Solutions

Essentials Of Statistics For Business & Economics

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