Two friends work in the same office. One travels to work by bus, the other cycles. The times taken (in minutes) by each to get to work on a sample of 8 days were:
![249_2d7a5de8-431e-41aa-bf2d-097c9179d9ac.png](https://secure.tutorsglobe.com/CMSImages/249_2d7a5de8-431e-41aa-bf2d-097c9179d9ac.png)
Calculate the mean and standard deviation for each set of times and use them to compare the travel times for the two commuters.