A company claims that the mean monthly residential electricity consumption in a certain region is more than 870 kiloWatt-hours (kWh). You want to test this claim. You find that a random sample of 70 residential customers has a mean monthly consumption of 890 kWh. Assume the population standard deviation is 126 kWh. At a=0.01, can you support the claim? Complete parts (a) through (e). (a) Identify Ho and H. Choose the correct answer below. A. Ho: HS870 OB. Ho: u>870 (claim) H:us870 H:u>870 (claim) O C. Ho: = 870 (claim) ΟD. H μα 890 Hu890 (claim) H: p+870 OE Ho: HS890 OF Ho: >890 (claim) H:u> 890 (claim) Hus 890 (b) Find the critical value(s) and identify the rejection region(s). Select the correct choice below and fill in the answer box within your choice. Use technology. (Round to two decimal places as needed.) O A. The critical values are t

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