A Mann-Whitney U Test was used to evaluate the null hypothesis that trip duration during the commuting hours of 8 AM and 5 PM are the same or significantly shorter than trip duration during every other hour of the day, with an alpha value of 0.05. The non-parametric test was chosen over a classmate's recommended T-test because the trip durations did not fit a normal distribution (see Fig. 1), so the Mann-Whitney U seemed a safer option rather than assume a normal distribution. As the hypothesis was also one-sided, the alternative hypothesis was specified as "greater" in the function call, generating a series of p-values describing whether a given hour is significantly greater than the commuting hour.