and a treatment is administered to each individual in the sample. After treatment sample mean is found to be 22.2 with SS=384. Find the df. If we do 2-tailed test with a=0.05 what is the critial value of it?

df ( degrees of freedom ) = n-1 = 25-1 = 24

With a = 0.05 and we do 2 tailed test, t critical = 1.7109 (from t statistic table for df =24 and a=0.05

Answers: df= 24 and t critical = 1.7109

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