Mathematics, 22.04.2021 01:10 Uschi

A company claims that the mean monthly residential electricity consumption in a certain region is more than 880 kiloWatt-hours (kWh). You want to test this claim. You find that a random sample of 64 residential customers has a mean monthly consumption of 900 kWh. Assume the population standard deviation is 124 kWh. At a = 0.01, can you support the claim? Complete parts (a) through (e).

A company claims that the mean monthly residential electricity consumption in a certain region is m

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