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The U S Energy Information Administration claimed that U S residential customers used an a...

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The U S Energy Information Administration claimed that U S residential customers used an a their area use more ele electricity this year A local power company believes that residents average To test their claim the company chooses a random sample of 189 of their custome average of 10 628 kWh of electricity last year Assuming that the population standard devia to support the power company s claim at the 0 02 level of significance Step 3 of 3 Draw a conclusion and interpret the decision Answer We fail to reject the null hypothesis and conclude that there is sufficient e O support the power company s claim that the mean amount of electricity f national average We reject the null hypothesis and conclude that there is insufficient evide support the power company s claim that the mean amount of electricity f national average We reject the null hypothesis and conclude that there is sufficient eviden support the power company s claim that the mean amount of electricity

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