GPA of Fraternity Men vs Non-Fraternity Men

Are the GPAs of male fraternity members the same as the GPAs of university males who do not belong to a fraternity?

Ha: Male fraternity members have a different GPA compared to university men not in a fraternity.
H0: Male fraternity members have the same GPA compared to university men not in a fraternity.

I used an alpha of .05. Based on my data, I was not able to reject the null hypothesis. There is no statistical difference between the mean GPA of Fraternity Men vs Non-Fraternity Men.

My conclusions were based upon data gathered over 9 years at Northwestern University. I obtained the data from the following website:

http://www.northwestern.edu/gogreek/resources/grades.html

I analyzed this data using our software to come to the above conclusion.

I located a research article that addressed the same question. The research article concluded that the GPAs were not statistically different. The link to this website follows:

http://afa1976.org/Portals/0/documents/AdvanceU/Oracle_vol2_iss1_Nelson.pdf

Results
Greek Men:
Mean 3.3596 Std. Deviation .03674 Std. Error Mean .00707

Non-Greek Men:
Mean 3.4152 Std. Deviation .20217 Std. Error Mean .03891

t-test
Sig. (2-tailed) .166
If Alpha is .05, Sig. of .166 > .05; therefore, fail to reject the null Hypotheses (H0). We conclude that the difference in means is not statistically different.


sociology

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