500 units from a factory are inspected and 12 are found to be
defective, 800 units from another factory are inspected and 12 are
found to be defective. Can it be concluded at 5% level of
significance that production at second factory is better than in
first factory?
500 units from a factory are inspected and 12 are found to be defective, 800 units from another factory are inspected an
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