I work through a 2 sample mean t-test and a 2 sample mean t-interval using a TI-NSPIRE. The video starts with a description of the setting, hypothesis statement, and conditions check. Why? Because the numbers out of your calculator mean nothing if you can't do the test in the first place!!!

I have added some annotations to refine the wording of my example:

DEFINING THE VARIABLES

Mu 1: Mean improvement of test scores for traditional teaching.

Mu 2: Mean improvement of test scores for teaching that incorporates technology.

NORMALITY CHECK

Normality: With N1+N2=20 which is between 15 and 30, the Central Limit Theorem ensures the sampling distribution of difference of means is approximately Normal since the box plots only show mild skewness.

Check out http://www.ProfRobBob.com, there you will find my lessons organized by class/subject and then by topics within each class. Find free review test, useful notes and more at http://www.mathplane.com

Tagged under: 2 sample,sample,-test, test,test,confidence,interval,ti-nspire,nspire,ti nspire,tarrou,tarrou',chalk,talk,profrobbob,statistics,math,education,hypothesis

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