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About: Confidence Intervals: Confidence Interval, Single Population Mean, Standard Deviation Unknown, Student's-t

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

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Metadata

Name: Confidence Intervals: Confidence Interval, Single Population Mean, Standard Deviation Unknown, Student's-t
ID: m16959
Language: English (en)
Summary: Confidence Interval, Single Population Mean, Population Standard Deviation Unknown, Student-t is part of the collection col10555 written by Barbara Illowsky and Susan Dean with contributions from Roberta Bloom.
Subject: Mathematics and Statistics
Keywords: elementary, statistics
License: Creative Commons Attribution License CC-BY 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: 1.24 (history)
First publication date: Jun 6, 2008 4:36 pm +0000
Last revision to module: Jun 18, 2012 9:44 am +0000

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Version History

Version: 1.24 Jun 18, 2012 9:44 am +0000 by Susan Dean
Changes:
Confidence Intervals: Confidence Interval, Single Population Mean, Standard Deviation Unknown, Student's-t: Changed Student-T to Student's-t in title.

Version: 1.23 Jun 9, 2012 6:03 am +0000 by Susan Dean
Changes:
Confidence Intervals: Confidence Interval, Single Population Mean, Standard Deviation Unknown, Student-T: Changed "Student-t" to "Student's-t." Added some language and did other minor edits.

Version: 1.22 Jun 6, 2012 6:18 am +0000 by Susan Dean
Changes:
Confidence Intervals: Confidence Interval, Single Population Mean, Standard Deviation Unknown, Student-T: Changed "average" to "mean" where needed.

Version: 1.21 Aug 19, 2011 5:24 pm +0000 by Susan Dean
Changes:
Confidence Intervals: Confidence Interval, Single Population Mean, Standard Deviation Unknown, Student-T: Added glossary item "Confidence Level (CL)."

Version: 1.20 Aug 19, 2011 9:36 am +0000 by Susan Dean
Changes:
Confidence Intervals: Confidence Interval, Single Population Mean, Standard Deviation Unknown, Student-T: Updated glossary item "Standard Deviation."

Version: 1.19 Aug 16, 2011 2:52 pm +0000 by Susan Dean
Changes:
Confidence Intervals: Confidence Interval, Single Population Mean, Standard Deviation Unknown, Student-T: Updated glossary item "Error Bound for a Population Mean."

Version: 1.18 Aug 16, 2011 10:20 am +0000 by Susan Dean
Changes:
Confidence Intervals: Confidence Interval, Single Population Mean, Standard Deviation Unknown, Student-T: Updated glossary item "Confidence Interval."

Version: 1.17 Aug 16, 2011 9:30 am +0000 by Susan Dean
Changes:
Confidence Intervals: Confidence Interval, Single Population Mean, Standard Deviation Unknown, Student-T: Updated glossary item "Normal Distribution."

Version: 1.16 Aug 11, 2011 10:46 pm +0000 by Susan Dean
Changes:
Confidence Intervals: Confidence Interval, Single Population Mean, Standard Deviation Unknown, Student-T: Updated glossary item "Standard Deviation."

Version: 1.15 Jul 9, 2011 10:56 am +0000 by Susan Dean
Changes:
Confidence Intervals: Confidence Interval, Single Population Mean, Standard Deviation Unknown, Student-T: Made edits for clarification in the examples.

Version: 1.14 Jul 8, 2011 9:28 pm +0000 by Susan Dean
Changes:
Confidence Intervals: Confidence Interval, Single Population Mean, Standard Deviation Unknown, Student-T: Minor organizational changes.

Version: 1.13 Jun 22, 2011 12:07 pm +0000 by Susan Dean
Changes:
Confidence Intervals: Confidence Interval, Single Population Mean, Standard Deviation Unknown, Student-T: Modified the text so it is easier to read and understand.

Version: 1.12 Jan 4, 2011 7:23 pm +0000 by Susan Dean
Changes:
Confidence Intervals: Confidence Interval, Single Population Mean, Standard Deviation Unknown, Student-T: Edited Error Bound for the Mean formula for clarity.

Version: 1.11 Feb 20, 2009 10:29 pm +0000 by Susan Dean
Changes:
Confidence Intervals: Confidence Interval, Single Population Mean, Standard Deviation Unknown, Student-T:  Updated glossary item confidence interval

Version: 1.10 Jan 26, 2009 2:36 pm +0000 by Susan Dean
Changes:
Confidence Intervals: Confidence Interval, Single Population Mean, Standard Deviation Unknown, Student-T: Added to the third fact about the Student-t the sentence "In the real world, however, as long as the underlying population is large and bell-shaped, and the data are a simple random sample, practitioners often consider the assumptions met."  Added to the reference to the Student-t table "See the Table of Contents 15. Table."

Version: 1.9 Jan 7, 2009 5:38 pm +0000 by Susan Dean
Changes:
In the Glossary Normal Distribution entry, changed the sentence "...the standard normal distribution or z-score" to "...the standard normal distribution or distribution of z-scores."

Version: 1.8 Jan 7, 2009 5:19 pm +0000 by Susan Dean
Changes:
From the Glossary, took out the z-score formula information.

Version: 1.7 Oct 27, 2008 11:40 am +0000 by James Cooper
Changes:
roles updated

Version: 1.6 Jul 21, 2008 2:53 am +0000 by Connexions
Changes:
removed draft note

Version: 1.5 Jul 16, 2008 5:37 pm +0000 by Raymond Wagner
Changes:
fixed math typos

Version: 1.4 Jul 14, 2008 3:24 pm +0000 by Connexions
Changes:
image review

Version: 1.3 Jul 7, 2008 2:41 pm +0000 by Connexions
Changes:
post review updates

Version: 1.2 Jul 1, 2008 1:37 am +0000 by Jonathan Emmons
Changes:
Updated for consistency within collection

Version: 1.1 Jun 26, 2008 1:26 pm +0000 by Connexions
Changes:
Initial publication

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American Chemical Society (ACS) Style Guide:

Dean, S.; Illowsky, B. Confidence Intervals: Confidence Interval, Single Population Mean, Standard Deviation Unknown, Student's-t, OpenStax-CNX Web site. http://cnx.org/content/m16959/1.24/, Jun 18, 2012.

American Medical Assocation (AMA) Manual of Style:

Dean S, Illowsky B. Confidence Intervals: Confidence Interval, Single Population Mean, Standard Deviation Unknown, Student's-t [OpenStax-CNX Web site]. June 18, 2012. Available at: http://cnx.org/content/m16959/1.24/.

American Psychological Assocation (APA) Publication Manual:

Dean, S., & Illowsky, B. (2012, June 18). Confidence Intervals: Confidence Interval, Single Population Mean, Standard Deviation Unknown, Student's-t. Retrieved from the OpenStax-CNX Web site: http://cnx.org/content/m16959/1.24/

Chicago Manual of Style (Bibliography):

Dean, Susan, and Barbara Illowsky. "Confidence Intervals: Confidence Interval, Single Population Mean, Standard Deviation Unknown, Student's-t." OpenStax-CNX. June 18, 2012. http://cnx.org/content/m16959/1.24/.

Chicago Manual of Style (Note):

Susan Dean and Barbara Illowsky, "Confidence Intervals: Confidence Interval, Single Population Mean, Standard Deviation Unknown, Student's-t," OpenStax-CNX, June 18, 2012, http://cnx.org/content/m16959/1.24/.

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

Dean, S., & Illowsky, B. 2012. Confidence Intervals: Confidence Interval, Single Population Mean, Standard Deviation Unknown, Student's-t. OpenStax-CNX, June 18, 2012. http://cnx.org/content/m16959/1.24/.

Modern Languages Association (MLA) Style Manual:

Dean, Susan, and Barbara Illowsky. Confidence Intervals: Confidence Interval, Single Population Mean, Standard Deviation Unknown, Student's-t. OpenStax-CNX. 18 June 2012 <http://cnx.org/content/m16959/1.24/>.