7. Toys: Electric Trains The Toylot Company makes an electric train with a motor that it claims...
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7. Toys: Electric Trains The Toylot Company makes an electric train with a motor that it claims will draw an average of only 0.8 ampere (A) under a normal load. A sample of nine motors was tested, and it was found that the mean current was x 5 1.4 A, with a sample standard deviation of s 5 0.41 A. Do the data indicate that the Toylot claim of 0.8 A is too low?
(Use a 1% level of significance.)
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Related Book For
Understandable Statistics Concepts And Methods
ISBN: 9781305142909
11th Edition
Authors: Charles Henry Brase, Corrinne Pellillo Brase
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