Consulting a t-test with a t-stat of 5.11 and an significane level of 0.05, you would fail to reject the null if you had only 1 degree of freedom. However, our degrees of freedom is found using the Welch-Satterthwaite Equation and is extremely high. Intuitively, you can reject the null at decreasing t stat levels as the degrees of freedom increases. In addition, by running the independent ttest through scipy.stats, we get a p value of 0.00000. Our two groups are therefore significantly different. 

However, our null hypothesis states that young people have smaller than or equal trip distances to old people. By just looking at the means of each trip distance, we can see that old people in fact travel longer distances. We therefore fail to reject the null