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Find a 90 Percent Confidence Interval for the Difference Between

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Find a 90 percent confidence interval for the difference between the proportions of failures in factory 1 and factory 2, where Find a 90 percent confidence interval for the difference between the proportions of failures in factory 1 and factory 2, where = .05, = .04, n<sub>1</sub> = 500, and n<sub>2</sub> = 2000. = .05, Find a 90 percent confidence interval for the difference between the proportions of failures in factory 1 and factory 2, where = .05, = .04, n<sub>1</sub> = 500, and n<sub>2</sub> = 2000. = .04, n1 = 500, and n2 = 2000.

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