The U.S. Energy Iniormation Administration clalmed that U.S. residenual customers Used an average of 10,931 RHOwatt 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 11,162 kWh of electricity last year. Assuming that the population standard deviation is 1263 kWh, is there sufficient evidence to support the power company's claim at the 0.05 level of significance? Step 3 of 3: Draw a conclusion and interpret the decision. 画 Tables E Keypad Answer Keyboard Shortcuts We fail to reject the null hypothesis and conclude that there is insufficient evidence at a 0.05 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 0.05 level of significance to support the power company's claim that the mean O 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 0.05 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 0.05 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.
The U.S. Energy Iniormation Administration clalmed that U.S. residenual customers Used an average of 10,931 RHOwatt 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 11,162 kWh of electricity last year. Assuming that the population standard deviation is 1263 kWh, is there sufficient evidence to support the power company's claim at the 0.05 level of significance? Step 3 of 3: Draw a conclusion and interpret the decision. 画 Tables E Keypad Answer Keyboard Shortcuts We fail to reject the null hypothesis and conclude that there is insufficient evidence at a 0.05 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 0.05 level of significance to support the power company's claim that the mean O 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 0.05 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 0.05 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.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section: Chapter Questions
Problem 8SGR
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Question
Transcribed Image Text:The U.S. Energy Information Administration claimed that U.S. residential customers used an average of 10,951 kilowatt hours (kWh) of electricity this year. A local power
company believes that residents in their area use more electricity on average than EIIA'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 11,162 kWh of electricity last year. Assuming that the population standard deviation is
1263 kWh, is there sufficient evidence to support the power company's claim at the 0.05 level of significance?
Step 3 of 3: Draw a conclusion and interpret the decision.
Answer
E Tables
国 Keypad
Keyboard Shortcuts
We fail to reject the null hypothesis and conclude that there is insufficient evidence at a 0.05 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 0.05 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 0.05 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 0.05 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.
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