A random sample of 80 tires showed that the mean mileage per tire was 41,700 mi, with a standard deviation of 4300 mi. a. Determine the z-score, to the nearest hundredth, for a tire that provided 46,300 mi of wear. b. The z-score for one tire was -2.44. What mileage did this tire provide? Round your result to the nearest hundred miles.
A random sample of 80 tires showed that the mean mileage per tire was 41,700 mi, with a standard deviation of 4300 mi. a. Determine the z-score, to the nearest hundredth, for a tire that provided 46,300 mi of wear. b. The z-score for one tire was -2.44. What mileage did this tire provide? Round your result to the nearest hundred miles.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section: Chapter Questions
Problem 9PT
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- A random sample of 80 tires showed that the
mean mileage per tire was 41,700 mi, with a standard deviation of 4300 mi. a. Determine the z-score, to the nearest hundredth, for a tire that provided 46,300 mi of wear. b. The z-score for one tire was -2.44. What mileage did this tire provide? Round your result to the nearest hundred miles.
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