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 0' = .000965 mm. Assume a random sample of 58 sheets of metal resulted in an E = .3193 mm. Calculate the 98 percent condence interval for the true mean metal thickness. (Round your answers to 4 decimal places.) A random sample of12 items is drawn from a population whose standard deviation is unknown. The sample mean is :E = 800 and the sample standard deviation is s: 10. Use appendix D to find the values of Student's t. (a) Construct an interval estimate oft; with 95% condence. (Round your answers to 3 decimal places.) The 95% condence interval is from ElmEl (b) Construct an interval estimate ofp with 95% condence, assuming that s : 20. (Round your answers to 3 decimal places.} The 95% condence interval is from ElmEl (c) Construct an interval estimate ofp with 95% confidence. assuming that s : 40. (Round your answers to 3 decimal places.) The 95% condence interval is from EllieEl