View the content: Hypothesis Testing: Two Population Means and Two Population Proportions: Comparing Two Independent Population Means with Known Population Standard Deviations
Name:  Hypothesis Testing: Two Population Means and Two Population Proportions: Comparing Two Independent Population Means with Known Population Standard Deviations 
ID:  m17042 
Language:  English (en) 
Summary:  
Subject:  Mathematics and Statistics 
Keywords:  elementary, statistics 
License:  Creative Commons Attribution License CCBY 3.0 


Authors:  Susan Dean (susanldean45@gmail.com), Barbara Illowsky, Ph.D. (illowskybarbara@deanza.edu) 
Copyright Holders:  Maxfield Foundation (cnx@cnx.org) 
Maintainers:  Susan Dean (susanldean45@gmail.com), Barbara Illowsky, Ph.D. (illowskybarbara@deanza.edu), Connexions (cnx@cnx.org) 


Latest version:  1.10 (history) 
First publication date:  Jun 17, 2008 4:27 pm +0000 
Last revision to module:  Jun 14, 2012 8:35 pm +0000 
PDF:  m17042_1.10.pdf  PDF file, for viewing content offline and printing. Learn more. 
XML:  m17042_1.10.cnxml  XML that defines the structure and contents of the module, minus any included media files. Can be reimported in the editing interface. Learn more. 
Version:  1.10 Jun 14, 2012 8:35 pm +0000 by Susan Dean 
Changes:  Hypothesis Testing: Two Population Means and Two Population Proportions: Comparing Two Independent Population Means with Known Population Standard Deviations: Added " mean time wax 1 lasts is longer (wax 1 is more effective) than the mean time wax 2 lasts" to the conclusion of example. Added condition that populations are normal. 


Version:  1.9 Jun 11, 2012 7:40 am +0000 by Susan Dean 
Changes:  Hypothesis Testing: Two Population Means and Two Population Proportions: Comparing Two Independent Population Means with Known Population Standard Deviations: Updated graph. Changed "average" to "mean" where needed. 


Version:  1.8 Feb 4, 2009 5:42 pm +0000 by Susan Dean 
Changes:  Two Population Means and Two Population Proportions: Comparing Two Independent Population Means with Known Population Standard Deviations: Took out the phrase "because usually you have two setts of data." 


Version:  1.7 Oct 27, 2008 5:39 pm +0000 by James Cooper 
Changes:  roles updated 


Version:  1.6 Jul 31, 2008 10:59 am +0000 by Connexions 
Changes:  removed draft note 


Version:  1.5 Jul 9, 2008 3:16 pm +0000 by Connexions 
Changes:  table corrections 


Version:  1.4 Jul 8, 2008 7:40 pm +0000 by Connexions 
Changes:  post review edits 


Version:  1.3 Jul 7, 2008 4:16 pm +0000 by Connexions 
Changes:  post review updates 


Version:  1.2 Jul 2, 2008 10:47 pm +0000 by Connexions 
Changes:  Added equation tags, corrected wrong subscript for u2. 


Version:  1.1 Jun 26, 2008 2:53 pm +0000 by Connexions 
Changes:  Initial publication 
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Dean, S.; Illowsky, B. Hypothesis Testing: Two Population Means and Two Population Proportions: Comparing Two Independent Population Means with Known Population Standard Deviations, OpenStaxCNX Web site. http://cnx.org/content/m17042/1.10/, Jun 14, 2012.
Dean S, Illowsky B. Hypothesis Testing: Two Population Means and Two Population Proportions: Comparing Two Independent Population Means with Known Population Standard Deviations [OpenStaxCNX Web site]. June 14, 2012. Available at: http://cnx.org/content/m17042/1.10/.
Dean, S., & Illowsky, B. (2012, June 14). Hypothesis Testing: Two Population Means and Two Population Proportions: Comparing Two Independent Population Means with Known Population Standard Deviations. Retrieved from the OpenStaxCNX Web site: http://cnx.org/content/m17042/1.10/
Dean, Susan, and Barbara Illowsky. "Hypothesis Testing: Two Population Means and Two Population Proportions: Comparing Two Independent Population Means with Known Population Standard Deviations." OpenStaxCNX. June 14, 2012. http://cnx.org/content/m17042/1.10/.
Susan Dean and Barbara Illowsky, "Hypothesis Testing: Two Population Means and Two Population Proportions: Comparing Two Independent Population Means with Known Population Standard Deviations," OpenStaxCNX, June 14, 2012, http://cnx.org/content/m17042/1.10/.
Dean, S., & Illowsky, B. 2012. Hypothesis Testing: Two Population Means and Two Population Proportions: Comparing Two Independent Population Means with Known Population Standard Deviations. OpenStaxCNX, June 14, 2012. http://cnx.org/content/m17042/1.10/.
Dean, Susan, and Barbara Illowsky. Hypothesis Testing: Two Population Means and Two Population Proportions: Comparing Two Independent Population Means with Known Population Standard Deviations. OpenStaxCNX. 14 June 2012 <http://cnx.org/content/m17042/1.10/>.