Provide an appropriate response. 22) A shipping firm suspects that the mean life of a certain brand of tire used by its trucks is less than 40,000 miles. To check the claim, the firm randomly selects and tests 18 of these tires and gets a mean lifetime of 39,300 miles with a standard deviation of 1200 miles. At a = 0.05, test the shipping firm's claim. Round the test statistic to the nearest thousandth. 2
Provide an appropriate response. 22) A shipping firm suspects that the mean life of a certain brand of tire used by its trucks is less than 40,000 miles. To check the claim, the firm randomly selects and tests 18 of these tires and gets a mean lifetime of 39,300 miles with a standard deviation of 1200 miles. At a = 0.05, test the shipping firm's claim. Round the test statistic to the nearest thousandth. 2
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 13PPS
Related questions
Question
![Provide an appropriate response.
22) A shipping firm suspects that the mean life of a certain brand of tire used by its trucks is less than 40,000 miles. To
check the claim, the firm randomly selects and tests 18 of these tires and gets a mean lifetime of 39,300 miles with
a standard deviation of 1200 miles. At a = 0.05, test the shipping firm's claim. Round the test statistic to the nearest
%3D
thousandth.
2](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fca98936e-33c7-4402-95ae-aeafe8e3f8b8%2F0645bed0-e300-469b-8798-25cd28f85e57%2Ffra8ahd_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Provide an appropriate response.
22) A shipping firm suspects that the mean life of a certain brand of tire used by its trucks is less than 40,000 miles. To
check the claim, the firm randomly selects and tests 18 of these tires and gets a mean lifetime of 39,300 miles with
a standard deviation of 1200 miles. At a = 0.05, test the shipping firm's claim. Round the test statistic to the nearest
%3D
thousandth.
2
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