Video Resources:

Click on the following links. Please note these will open in a new window.

Central Limit Theorem: This 9:49 video from Khan Academy presents a careful discussion of the Central Limit Theorem that may be useful in helping students understand a sometimes tricky concept.

The Difference between Z- and t-statistics: This 6:39 video from Khan Academy discusses the difference between z-testing and t-testing. This can help students solidify the difference between the two types of testing discussed in Chapter 7.