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May 5, 2015

Homework Help: Statistics

Posted by Torri on Tuesday, April 23, 2013 at 9:52pm.

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 twelve motors was tested, and it was found that the mean current was x = 1.26 A, with a sample standard deviation of s = 0.40 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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