CENGAGENOW FOR ANDERSON/SWEENEY/WILLIAM
CENGAGENOW FOR ANDERSON/SWEENEY/WILLIAM
13th Edition
ISBN: 9781337094399
Author: Cochran
Publisher: IACCENGAGE
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Estimation
A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.
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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

CENGAGENOW FOR ANDERSON/SWEENEY/WILLIAM

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