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The mean finish time for a yearly amateur auto race was 187.22 minutes with a standard...

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?

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