The mean finish time for a yearly amateur auto race was 186.18 minutes with a standard deviation of 0.331 minute. the winning? car, driven by ron? , finished in 185.82 minutes. the previous? year's race had a mean finishing time of 111.8 with a standard deviation of 0.111 minute. the winning car that? year, driven by sally? , finished in 111.59 minutes. find their respective? z-scores. who had the more convincing? victory? ron had a finish time with a? z-score of nothing. sally had a finish time with a? z-score of nothing.