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# About: Hypothesis Testing: Two Population Means and Two Population Proportions: Introduction

Module by: Susan Dean, Barbara Illowsky, Ph.D.. E-mail the authors

 Name: Hypothesis Testing: Two Population Means and Two Population Proportions: Introduction ID: m17029 Language: English (en) Subject: Mathematics and Statistics Keywords: elementary, statistics License: Creative Commons Attribution License CC-BY 3.0 Authors: Copyright Holders: Maintainers: Latest version: 1.9 (history) First publication date: Jun 17, 2008 4:15 pm -0500 Last revision to module: Jun 14, 2012 6:18 pm -0500

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## Version History

 Version: 1.9 Jun 14, 2012 6:18 pm -0500 by Changes: `Two Population Means and Two Population Proportions: Introduction: Updated the Note.` Version: 1.8 Jun 11, 2012 7:02 am -0500 by Changes: `Hypothesis Testing: Two Population Means and Two Population Proportions: Introduction: Changed "average" to "mean." Changed "Objectives" to "Outcomes."` Version: 1.7 Aug 25, 2010 11:26 am -0500 by Changes: ` Hypothesis Testing: Two Population Means and Two Population Proportions: Introduction: Minor edit.` Version: 1.6 Feb 4, 2009 6:58 pm -0600 by Changes: `Hypothesis Testing: Two Population Means and Two Population Proportions: Introduction: Added the word "general" before "procedure" so that the sentence reads "The general procedure is still the same, just expanded." In the 4th paragraph, changed the second sentence to read "The groups are classified either as independent or as matched pairs." In the 4th paragraph, changed the sentence that starts with "Matched pairs" to read "Matched pairs consist of two samples that are dependent." Changed the heading "Matched or paired samples" to "Matched or paired samples (samples are dependent." Changed the list items to the one item "Becomes a test of one population mean." ` Version: 1.5 Oct 27, 2008 5:31 pm -0500 by Changes: `roles updated` Version: 1.4 Oct 1, 2008 3:59 am -0500 by Changes: `Added link to video lecture` Version: 1.3 Jul 18, 2008 2:49 pm -0500 by Changes: `removed draft notice` Version: 1.2 Jul 2, 2008 9:55 pm -0500 by Changes: `Added objectives` Version: 1.1 Jun 26, 2008 2:48 pm -0500 by Changes: `Initial publication`

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## How to Cite and Attribute This Content

The following citation styles comply with the attribution requirements for the license (CC-BY 3.0) of this work:

### American Chemical Society (ACS) Style Guide:

Dean, S.; Illowsky, B. Hypothesis Testing: Two Population Means and Two Population Proportions: Introduction, OpenStax-CNX Web site. http://cnx.org/content/m17029/1.9/, Jun 14, 2012.

### American Medical Assocation (AMA) Manual of Style:

Dean S, Illowsky B. Hypothesis Testing: Two Population Means and Two Population Proportions: Introduction [OpenStax-CNX Web site]. June 14, 2012. Available at: http://cnx.org/content/m17029/1.9/.

### American Psychological Assocation (APA) Publication Manual:

Dean, S., & Illowsky, B. (2012, June 14). Hypothesis Testing: Two Population Means and Two Population Proportions: Introduction. Retrieved from the OpenStax-CNX Web site: http://cnx.org/content/m17029/1.9/

### Chicago Manual of Style (Bibliography):

Dean, Susan, and Barbara Illowsky. "Hypothesis Testing: Two Population Means and Two Population Proportions: Introduction." OpenStax-CNX. June 14, 2012. http://cnx.org/content/m17029/1.9/.

### Chicago Manual of Style (Note):

Susan Dean and Barbara Illowsky, "Hypothesis Testing: Two Population Means and Two Population Proportions: Introduction," OpenStax-CNX, June 14, 2012, http://cnx.org/content/m17029/1.9/.

### Chicago Manual of Style (Reference, in Author-Date style):

Dean, S., & Illowsky, B. 2012. Hypothesis Testing: Two Population Means and Two Population Proportions: Introduction. OpenStax-CNX, June 14, 2012. http://cnx.org/content/m17029/1.9/.

### Modern Languages Association (MLA) Style Manual:

Dean, Susan, and Barbara Illowsky. Hypothesis Testing: Two Population Means and Two Population Proportions: Introduction. OpenStax-CNX. 14 June 2012 <http://cnx.org/content/m17029/1.9/>.