Formula for T-test

[Harrywatson]

Mean: 11.10
Sum sq: 34.2

n= 8
df= 7
SD= 2.21
SE= 0.78
t=????

Upper Cl= 12.95
Lower Cl= 9.25



How do I calculate to for a T-test? Using df and p-values apparently?




Cant grasp from the internet on how to calculate for T-tests.
Thanks

 

[AhoyNC]

Your Upper CI =
Mean + t * (s/sqrt = Upper CI
Solve for t
t = (Upper CI - Mean) * (sqrt/s)
Then just plug in your numbers above and you should get 2.367

You could also just use the t tables.
http://www.sjsu.edu/faculty/gerstman/StatPrimer/t-table.pdf