Essay
A consultant is investigating the defect rates at two widget factories.A random sample of 500 widgets from factory 1 contained 25 defective widgets.Of 2000 randomly selected widgets from factory 2,80 were defective.Find a 90 percent confidence interval for the difference between the proportions of defective widgets in factory 1 and factory 2.
Correct Answer:
Verified
Correct Answer:
Verified
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