The U.S. Energy Information Administration claimed that U.S. residential customers used an average of 10,897 kilowatt hours (kWh) of electricity this year. A local power company believes that residents in their area use more electricity on average than EIA’s reported average. To test their claim, the company chooses a random sample of 184 of their customers and calculates that these customers used an average of 11,121 kWh of electricity last year. Assuming that the population standard deviation is 1,856 kWh, is there sufficient evidence to support the power company’s claim at the 0.10 level of significance?**Step 3 of 3**: Draw a conclusion and interpret the decision.**Answer Options:**- We fail to reject the null hypothesis and conclude that there is insufficient evidence at a 0.10 level of significance to support the power company’s claim that the mean amount of electricity for their residents is more than the national average.- We fail to reject the null hypothesis and conclude that there is sufficient evidence at a 0.10 level of significance to support the power company’s claim that the mean amount of electricity for their residents is more than the national average.- We reject the null hypothesis and conclude that there is sufficient evidence at a 0.10 level of significance to support the power company’s claim that the mean amount of electricity for their residents is more than the national average.- We reject the null hypothesis and conclude that there is insufficient evidence at a 0.10 level of significance to support the power company’s claim that the mean amount of electricity for their residents is more than the national average.

Given that Sample size n = 184 Sample mean = 11121 Population SD = 1856 Level of significance = 0.10

Answered: The U.S. Energy Information…

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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