The mean finish time for a yearly amateur auto race was 186.42 minutes with a standard deviation of 0.391 minute. The winning car, driven by Mike, finished in 185.36 minutes. The previous year's race had a mean finishing time of 110.8 with a standard deviation of 0.102 minute. The winning car that year, driven by Susan, finished in 110.57 minutes. Find their respective z-scores. Who had the more convincing victory? Mike had a finish time with a z-score of Susan had a finish time with a z-score of (Round to two decimal places as needed.) Which driver had a more convincing victory? O A. Susan a more convincing victory because of a lower z-score O B. Mike had a more convincing victory because of a highe r z-score. O C. Mike had a more convincing victory because of a lower z-score. O D. Susan a more convincing victory because of a higher z-score.
The mean finish time for a yearly amateur auto race was 186.42 minutes with a standard deviation of 0.391 minute. The winning car, driven by Mike, finished in 185.36 minutes. The previous year's race had a mean finishing time of 110.8 with a standard deviation of 0.102 minute. The winning car that year, driven by Susan, finished in 110.57 minutes. Find their respective z-scores. Who had the more convincing victory? Mike had a finish time with a z-score of Susan had a finish time with a z-score of (Round to two decimal places as needed.) Which driver had a more convincing victory? O A. Susan a more convincing victory because of a lower z-score O B. Mike had a more convincing victory because of a highe r z-score. O C. Mike had a more convincing victory because of a lower z-score. O D. Susan a more convincing victory because of a higher z-score.
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