Find respective z-scores

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The mean finish time for yearly amateur auto race was 187.23 minutes with a standard deviation of 0.363 minute. The winning car, driven by Alex, finished in 186.07 minutes. The previous year's race had a mean finishing time of 111.5 with a standard deviation of 0.142 minute. The winning car that year, driven by Kate, finished in 111.25 minutes. Find their respective z-scores. Who had the more convincing victory?

Reference no: EM132377023

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