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1. A spark plug manufacturer claimed that its plugs have a mean life in A fleet owner purchased a large number of sets. excess of 22,100 miles. sample of 16 sets revealed a mean life of 23,400 miles, with a sample standard deviation of 1,500 miles. Can the manufacturer's claim be A substantiated? a = .10 is to be used for the test. Ho: Ha: Decision Rule: Decision: Conclusion:

1. A spark plug manufacturer claimed that its plugs have a mean life in A fleet owner purchased a large number of sets. excess of 22,100 miles. sample of 16 sets revealed a mean life of 23,400 miles, with a sample standard deviation of 1,500 miles. Can the manufacturer's claim be A substantiated? a = .10 is to be used for the test. Ho: Ha: Decision Rule: Decision: Conclusion:

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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1. A spark plug manufacturer claimed that its plugs have a mean life in excess of 22,100 miles. A fleet owner purchased a large number of sets. A sample of 16 sets revealed a mean life of 23,400 miles, with a sample standard deviation of 1,500 miles. Can the manufacturer's claim be substantiated? a = .10 is to be used for the test. Ho: На: Decision Rule: Decision: Conclusion:
Transcribed Image Text:1. A spark plug manufacturer claimed that its plugs have a mean life in excess of 22,100 miles. A fleet owner purchased a large number of sets. A sample of 16 sets revealed a mean life of 23,400 miles, with a sample standard deviation of 1,500 miles. Can the manufacturer's claim be substantiated? a = .10 is to be used for the test. Ho: На: Decision Rule: Decision: Conclusion:
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Step 1

The null and alternative hypothesis is given by;

H0: μ≤22100Ha: μ>22100 

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