Open MyStatLab (Publisher Content) and read Chapter 4 in your eText.

From the left sidebar select "Chapter Contents." Then select "Chapter 10" and read Sections 10.1-10.4

Watch the following Video content on the difference of means.

Hypothesis Test for Difference of Means:

Video from Khan Academy and use covered by license. http://creativecommons.org/licenses/by-nc-sa/3.0/us/legalcode (Links to an external site.)  No changes were made.