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second photo has the options.. It is not increase or does not change! Suppose a new production method will be implemented if a hypothesis test

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second photo has the options.. It is not increase or does not change!

Suppose a new production method will be implemented if a hypothesis test supports the conclusion that the new method reduces the mean operating cost per hour. (a) State the appropriate null and alternative hypotheses if the mean cost for the current production method is $220 per hour. Ho: 2 220 Ha:

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