The mean finish time for a yearly amateur auto race was 185.95
minutes with a standard deviation of
0.335 minute. The winning car, driven by Todd
finished in 184.96 minutes. The previous year's race had a
mean finishing time of 112.7 with a standard deviation of 0.129
minute. The winning car that year, driven by Betty finished
in 112.49 minutes. Find their respective z-scores. Who had
the more convincing victory?
Todd had a finish time with a z-score of____.
Betty had a finish time with a z score of____.