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  book-img-for-question

Understandable Statistics Concepts And Methods

ISBN: 9781305142909

11th Edition

Authors: Charles Henry Brase, Corrinne Pellillo Brase

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