Question

The Ball Corporation's beverage can manufacturing plant in Fort Atkinson, Wisconsin, uses a metal supplier that...

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 = .000672 mm. Assume a random sample of 56 sheets of metal resulted in an x¯ = .2737 mm. Calculate the 98 percent confidence interval for the true mean metal thickness. (Round your answers to 4 decimal places.)

QUESTION:

The 98% confidence interval is from ____ to _____

Math   Statistics-And-Probability   
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