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The service life of a general refrigerator is 10 years. The following is the tracking data of 20 users of a brand of refrigerator. The service life of the refrigerators of these 20 users is (unit: year): 11.1, 11.2, 10.6, 10.5,9.8, 10.4, 10.6, 9.6, 9.7, 9.9, 10.9, 9.6, 10.2, 10.3, 9.6, 9.9,9.8, 10.5, 10.1, 9.7 Is this brand significantly better than general refrigerators? (we take α=0.05

The service life of a general refrigerator is 10 years. The following is the tracking data of 20 users of a brand of refrigerator. The service life of the refrigerators of these 20 users is (unit: year): 11.1, 11.2, 10.6, 10.5,9.8, 10.4, 10.6, 9.6, 9.7, 9.9, 10.9, 9.6, 10.2, 10.3, 9.6, 9.9,9.8, 10.5, 10.1, 9.7 Is this brand significantly better than general refrigerators? (we take α=0.05

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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The service life of a general refrigerator is 10 years. The following is the tracking data of 20 users of a brand of refrigerator. The service life of the refrigerators of these 20 users is (unit: year): 11.1, 11.2, 10.6, 10.5,9.8, 10.4, 10.6, 9.6, 9.7, 9.9, 10.9, 9.6, 10.2, 10.3, 9.6, 9.9,9.8, 10.5, 10.1, 9.7 Is this brand significantly better than general refrigerators? (we take α=0.05 (Attached quantile: 2005 = 1.65, Z0025 = 1.96, toas (19) = 2.0930, 1002s (19)=1.7291,
Transcribed Image Text:The service life of a general refrigerator is 10 years. The following is the tracking data of 20 users of a brand of refrigerator. The service life of the refrigerators of these 20 users is (unit: year): 11.1, 11.2, 10.6, 10.5,9.8, 10.4, 10.6, 9.6, 9.7, 9.9, 10.9, 9.6, 10.2, 10.3, 9.6, 9.9,9.8, 10.5, 10.1, 9.7 Is this brand significantly better than general refrigerators? (we take α=0.05 (Attached quantile: 2005 = 1.65, Z0025 = 1.96, toas (19) = 2.0930, 1002s (19)=1.7291,
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