An employee claims that a new process for manufacturing DVD players is better because the rate of

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An employee claims that a new process for manufacturing DVD players is better because the rate of defects is below 5%, the rate of defects in the past. When 20 DVD players are manufactured with the new process, there are no defects. Assuming that the new method has the same 5% defect rate as in the past, find the probability of getting no defects among the 20 DVD players. Based on the result, is there strong evidence to conclude that the new process is better?
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Elementary Statistics

ISBN: 9780321225979

3rd Canadian Edition

Authors: Mario F. Triola

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