# Question: The Ball Corporation s beverage can manufacturing plant in Fort Atkinson

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 = .000959 mm. If a random sample of 58 sheets of metal resulted in an x-bar = 0.2731 mm, calculate the 99 percent confidence interval for the true mean metal thickness.

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