A motor vehicle manufacturing company desires to introduce a new model motor vehicle. The company claims that the mean fuel consumption of its new model vehicle is lower than that of the existing model of the motor vehicle, which is 27 kms/litre. A sample of 100 vehicles of the new model vehicle is selected randomly and their fuel consumptions are observed. It is found that the mean fuel consumption of the 100 new model motor vehicles is 30 kms/litre with a standard deviation of 3 kms/litre. Test the claim of the company at 5% level of significance.

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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A motor vehicle manufacturing company desires to introduce a new model motor vehicle.
The company claims that the mean fuel consumption of its new model vehicle is lower than that
of the existing model of the motor vehicle, which is 27 kms/litre. A sample of 100 vehicles of the
new model vehicle is selected randomly and their fuel consumptions are observed. It is found that
the mean fuel consumption of the 100 new model motor vehicles is 30 kms/litre with a standard
deviation of 3 kms/litre. Test the claim of the company at 5% level of significance.
Transcribed Image Text:A motor vehicle manufacturing company desires to introduce a new model motor vehicle. The company claims that the mean fuel consumption of its new model vehicle is lower than that of the existing model of the motor vehicle, which is 27 kms/litre. A sample of 100 vehicles of the new model vehicle is selected randomly and their fuel consumptions are observed. It is found that the mean fuel consumption of the 100 new model motor vehicles is 30 kms/litre with a standard deviation of 3 kms/litre. Test the claim of the company at 5% level of significance.
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