An energy study found that household use of electricity had a mean of 583 and a standard
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An energy study found that household use of electricity had a mean of 583 and a standard deviation of 450 kWh (kilowatt-hours).
(a) If the distribution was normal, what percentage of the households used above 800 kWh?
(b) Do you think the distribution is truly normal?Why or why not?
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Related Book For 
Statistical Methods For The Social Sciences
ISBN: 9781292220314
5th Global Edition
Authors: Alan Agresti
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