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deviation of 150 kWh. Do the data support the claim that the average energy consumption per month is less than 900 kWh? Use a 0.5% level of significance. Show all steps and label them. Use only the classical approach.

deviation of 150 kWh. Do the data support the claim that the average energy consumption per month is less than 900 kWh? Use a 0.5% level of significance. Show all steps and label them. Use only the classical approach.

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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Energy Conservation Solutions (ECS) claims that households using their electricity provider will have an average monthly energy consumption of 900 kWh. Assume the energy consumption is normally distributed. A random sample of 25 households using ECS shows an average energy consumption of 860 kWh with a population standard deviation of 150 kWh. Do the data support the claim that the average energy consumption per month is less than 900 kWh? Use a 0.5% level of significance. Show all steps and label them. Use only the classical approach.
Transcribed Image Text:Energy Conservation Solutions (ECS) claims that households using their electricity provider will have an average monthly energy consumption of 900 kWh. Assume the energy consumption is normally distributed. A random sample of 25 households using ECS shows an average energy consumption of 860 kWh with a population standard deviation of 150 kWh. Do the data support the claim that the average energy consumption per month is less than 900 kWh? Use a 0.5% level of significance. Show all steps and label them. Use only the classical approach.
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