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 sigma = .000507 mm. Assume a random sample of 60 sheets of metal resulted in an X bar = .2320 mm.

Calculate the 98 percent confidence interval for the true mean metal thickness. (Round your answers to 4 decimal places.)

The 98% confidence interval is from- To-