Answered: According to some studies, a vacuum…

Name: According to some studies, a vacuum cleaner uses an average of 46 kilo
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Description: According to some studies, a vacuum cleaner uses an average of 46 kilowatt hours per year. If a sample of 12 homes shows that vacuum cleaners use an average of 42 kilowatt hours per year with a standard deviation of 11.9 kilowatt hours, does this sug

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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According to some studies, a vacuum cleaner uses an average of 46 kilowatt hours per year. If a sample of 12 homes shows that vacuum cleaners use an average of 42 kilowatt hours per year with a standard deviation of 11.9 kilowatt hours, does this suggest at the 0.05 level of significance that vacuum cleaners use, on average, less than 46 kilowatt hours annually? Conduct an appropriate test to answer this.
Assume the population of kilowatt hours to be normal.

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