Removing Outliers …
Gender N Mean StDev SE Mean
95% CI for mu (1) - mu (2): ( -103.7, -35)
T-Test mu (1) = mu (2) (vs not =): T = -4.02 P = 0.0001
The difference in male and female phone usage becomes even more significant. We are 95% confident that the difference in the averages is now more than 35 minutes.