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The Complete Idiot's Guide to Statistics, 2nd Edition by Robert Donnelly

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Chapter 17
Hypothesis Testing with Two Samples
In This Chapter
◆ Developing the sampling distribution for the difference in means
◆ Testing the difference in means between populations using a large and small sample
◆ Distinguishing between independent and dependent samples
◆ Using Excel to perform a hypothesis test
◆ Testing the difference in proportions between populations
Now we’re really cooking. Because you have done so well with one sample hypothesis testing, you are ready to graduate to the next level—two-sample testing. Here we often test to see whether there is a difference between two separate populations. For instance, I could test to see whether there was a difference between Brian and John’s average golf score. ...

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