[Solved] The average electric cost for mid-size manufacturing companies operating in the western United States is $0.10 / KWHr, with a standard deviation
Question: The average electric cost for mid-size manufacturing companies operating in the western United States is $0.10 / KWHr, with a standard deviation of $0.03 / KWHr. A sample of 35 companies are surveyed. What is the likelihood that the sample mean is less than $0.09?
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