Engineers at McDonalds are looking at a new ice cream machine to replace the ones that are frequently not working. The manufacture of one machine says the mean fill is 6.0 oz (). You take a sample of 5 ice creams supplied from the machine and get the following volumes in units of oz. [6.0, 5.4, 5.7, 5.8, 5.8] Find (a) Construct a two- sided 95% confidence interval for the population mean. (b) Construct a two- sided 90% confidence interval for the population mean (c) Construct an upper 95% confidence interval for the population mean Diagram Solution Confidence Interval: Confidence Interval: Upper Confidence Interval: d) Why is the upper control limit for the 90% two-sided CI the same of the upper 95% CI? e) What do you notice about the CI and the mean the company is claiming?