Links

Khan Academy (Statistics):

http://www.khanacademy.org/?video=#statistics

Chapter 24

Hypothesis Testing: Does Chance explain the Results? (P.B. Stark, UC Berkeley)

http://www.stat.berkeley.edu/~stark/SticiGui/Text/testing.htm 

Chapter 25

Does Treatment Have an Effect? (P.B. Stark, UC Berkeley)

http://www.stat.berkeley.edu/~stark/SticiGui/Text/experiments.htm