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You are concerned that the lengths of widgets produced on your new equipment differs from those...

You are concerned that the lengths of widgets produced on your new equipment differs from those on the old. You take sample size 40 from each equipment and obtain the following results:

Old Equip: Mean=7.5 SD=0.2

New Equip: Mean= 7.1 SD=0.1

Alpha=.05 perform a full hypothesis test. Is there a difference in the lengths produced?

Math   Statistics-And-Probability   
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