25-01-2024
Mathematics

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The mean finish time for a yearly amateur auto race was 186.85 minutes with a standard deviation of 0.374 minute. The winning car, driven by Perry, finished in 186.25 minutes. The previous year's race had a mean finishing time of 111.4 with a standard deviation of 0.104 minute. The winning car that year, driven by Amber, finished in 111.17 minutes. Find their respective z-scores. Who had the more convincing victory

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