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A company claims that the mean monthly residential

A company claims that the mean monthly residential electricity consumption in a certain region is more than 870 kilowatt-hours. You want to test this claim you find a random sample of 63 residential customers has a mean monthly consumption of 900kwh. Assume the population standard deviation is 123 kWh. At 0.05 (right-tailed test), can you support the claim. Complete parts (a) through (e)

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