A machine has a record of producing 80% excellent, 18% good, and 2% unacceptable parts. After extensive

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A machine has a record of producing 80% excellent, 18% good, and 2%

unacceptable parts. After extensive repairs, a sample of 200 produced 157 excellent, 42 good, and 1 unacceptable part. Have the repairs changed the nature of the output of the machine?

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Statistical Methods

ISBN: 9780128230435

4th Edition

Authors: Donna L. Mohr, William J. Wilson, Rudolf J. Freund

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