Posted by Cherelle on .
There are two independent groups of students one group took online courses the second group took conventional course faceface. Using the sample data determine if there is a significant difference between the 2 groups scores.Ho(mu1mu2)=0 (no difference), H1(mu1mu2)<>0 (there is a difference) a=0.05,t critical=+or2.01,n1=10,M1=93, s1sq.=20, n2=10, M1=85, s2sq.=20

statistics 
MathGuru,
Here are a few hints:
1. Try an independent groups ttest to calculate the ttest statistic.
2. Degrees of freedom for an independent groups ttest is this:
n1 + n2  2
3. Compare your test statistic to the critical values listed. If the test statistic exceeds the critical values, reject the null and conclude a difference. If the test statistic does not exceed the critical values, do not reject the null (you cannot conclude a difference in this case).
I hope this will get you started.