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The mean finish time for a yearly amateur auto race was 187.08 minutes with a standard deviation of 0.303 minute. The winning car, driven by Terry, finished in 186.39 minutes. The previous year's race had a mean finishing time of 111.7 with a standard deviation of 0.145 minute. The winning car that year, driven by Betty, finished in 111.41 minutes. Find their respective z-scores. Who had the more convincing victory? Terry had a finish time with a z-score of Betty had a finish time with a z-score of (Round to two decimal places as needed.)

The mean finish time for a yearly amateur auto race was 187.08 minutes with a standard deviation of 0.303 minute. The winning car, driven by Terry, finished in 186.39 minutes. The previous year's race had a mean finishing time of 111.7 with a standard deviation of 0.145 minute. The winning car that year, driven by Betty, finished in 111.41 minutes. Find their respective z-scores. Who had the more convincing victory? Terry had a finish time with a z-score of Betty had a finish time with a z-score of (Round to two decimal places as needed.)

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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The mean finish time for a yearly amateur auto race was 187.08 minutes with a standard deviation of 0.303 minute. The winning car, driven by Terry, finished in 186.39 minutes. The previous year's race had a mean finishing time of 111.7 with a standard deviation of 0.145 minute. The winning car that year, driven by Betty, finished in 111.41 minutes. Find their respective z-scores. Who had the more convincing victory? Terry had a finish time with a z-score of Betty had a finish time with a z-score of (Round to two decimal places as needed.)
Transcribed Image Text:The mean finish time for a yearly amateur auto race was 187.08 minutes with a standard deviation of 0.303 minute. The winning car, driven by Terry, finished in 186.39 minutes. The previous year's race had a mean finishing time of 111.7 with a standard deviation of 0.145 minute. The winning car that year, driven by Betty, finished in 111.41 minutes. Find their respective z-scores. Who had the more convincing victory? Terry had a finish time with a z-score of Betty had a finish time with a z-score of (Round to two decimal places as needed.)
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