Perform a t test on your results at this address:
http://www.assumption.edu/html/academic/users/avadum/applets/applets.html
or at this address:
http://www.physics.csbsju.edu/stats/t-test_NROW_form.html
You can learn about the t test at this site, there is also
an applet here that performs it.
http://home.clara.net/sisa/t-thlp.htm
This site contains only background about commonly used statistical
tools:
http://web.utk.edu/~toddc/xsqtan.html