The mean finish time for a yearly amateur auto race was 186.63 minutes with a standard deviation of 0.379 minute. The winning car, driven by Perry, finished in 185.99 minutes. The previous year's race had a mean finishing time of 110.4 with a standard deviation of 0.128 minute. The winning car that year, driven by Sally, finished in 110.02 minutes. Find their respective z-scores. Who had the more convincing victory? Perry had a finish time with a z-score of Sally 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. Perry a more convincing victory because of a higher z-score. O B. Perry a more convincing victory because of a lower z-score. O C. Sally had a more convincing victory because of a higher Z-score. O D. Sally had a more convincing victory because of a lower z-score.
The mean finish time for a yearly amateur auto race was 186.63 minutes with a standard deviation of 0.379 minute. The winning car, driven by Perry, finished in 185.99 minutes. The previous year's race had a mean finishing time of 110.4 with a standard deviation of 0.128 minute. The winning car that year, driven by Sally, finished in 110.02 minutes. Find their respective z-scores. Who had the more convincing victory? Perry had a finish time with a z-score of Sally 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. Perry a more convincing victory because of a higher z-score. O B. Perry a more convincing victory because of a lower z-score. O C. Sally had a more convincing victory because of a higher Z-score. O D. Sally had a more convincing victory because of a lower z-score.
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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