The lengths of life (in hours) of a sample of 40 100-watt light bulbs produced by manufacturer

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The lengths of life (in hours) of a sample of 40 100-watt light bulbs produced by manufacturer A and a sample of 40 100-watt light bulbs produced by manufacturer B are stored in Bulbs. Completely analyze the differences between the lengths of life of the bulbs produced by the two manufacturers. (Use a = 0.05.)
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Statistics For Managers Using Microsoft Excel

ISBN: 772

7th Edition

Authors: David M. Levine, David F. Stephan, Kathryn A. Szabat

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