In: Math
The mean finish time for a yearly amateur auto race was 187.22 minutes with a standard deviation of 0.377 minute. The winning car, driven by Todd. Todd, finished in 186.63 minutes. The previous year's race had a mean finishing time of 110.4 with a standard deviation of 0.112 minute. The winning car that year, driven by Karen, finished in 110.19 minutes. Find their respective z-scores. Who had the more convincing victory?