Links
For all practical purposes - Confident conclusions (Annenberg Media):
http://video.google.com/videoplay?docid=7985836251509664787#
"Product and Process Comparisions" in NIST/ SEMATECH Engineering Statistics e-book:
http://www.itl.nist.gov/div898/handbook/prc/prc.htm
Chapter 22
Estimating Parameters from Simple Random Samples (P.B. Stark, UC Berkeley)
http://www.stat.berkeley.edu/~stark/SticiGui/Text/estimation.htm
Chapter 23
Confidence Intervals (P.B. Stark, UC Berkeley)
http://www.stat.berkeley.edu/~stark/SticiGui/Text/confidenceIntervals.htm