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Confidence Interval Assignment | Professional Writing Services

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December 10th, 2019

The Ball Corporation’s beverage can manufacturing plant in Fort Atkinson, Wisconsin, uses a metal supplier that provides metal with a known thickness standard deviation σ = .000631 mm.

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Assume a random sample of 46 sheets of metal resulted in an x-= .3293 mm.

Calculate the 90 percent confidence interval for the true mean metal thickness. (Round your answers to 4 decimal places.)

The 90% confidence interval is from  _____to_____  

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