A city council collected data on driving speeds in order to decide on appropriate speed limits. On a major street the mean speed was

40.5

mph, with a standard deviation of

4.6

mph.

On a residential street, speeds had a mean of

23

mph and a standard deviation of

2.5

mph.

Relative to the other traffic on that street, which of the following speeds is greater:

37

mph on the major street or

22

mph on the residential

street?

Show the calculations that justify your answer; round the results to two decimal places.