Math 221 Principles of Statistics

Introductory Examples on Hypothesis Testing: Hypotheses


   A director of manufacturing believes production costs can be substantially reduced by changing to a new production method. Because of the cost of retooling and retraining, she must convince executives that the new method really does reduce costs. The current production method incurs mean costs of $2,150 per hour, for each assembly line.

 

If a study is to be conducted, how should she phrase her "research question?"

 

 

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