The U.S. Energy Information Administration claimed that U.S. residential customers used an average of 10,817 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 174 of their customers and calculates that these customers used an average of 11,156kWh of electricity last year. Assuming that the population standard deviation is 1913kWh, is there sufficient evidence to support the power company's claim at the 0.05 level of significance. Step 1 of 3 : State the null and alternative hypotheses for the test. Choose one option below H0: μ=10,817 HA: μ⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯10,817 A.≠ B.< C.> Step 2 of 3 : Compute the value of the test statistic. Round your answer to two decimal places.
The U.S. Energy Information Administration claimed that U.S. residential customers used an average of 10,817 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 174 of their customers and calculates that these customers used an average of 11,156kWh of electricity last year. Assuming that the population standard deviation is 1913kWh, is there sufficient evidence to support the power company's claim at the 0.05 level of significance.
H0: μ=10,817
HA: μ⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯10,817
A.≠
B.<
C.>
Step 2 of 3 : Compute the value of the test statistic. Round your answer to two decimal places.
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