At the .05 significance level for a two-tailed test, can we conclude that there is a difference in the mean renting prices of apartments with a community gym and apartments without a gym? I have the average for a gym of 951.48 and without a gym for 947.62 I need help!! Solution http://www.ats.ucla.edu/stat/mult_pkg/faq/general/tail_tests.htm http://www.ltcconline.net/greenl/courses/201/hyptest/diff.htm here are your answers.