Imagine you are a manager at a major bottling company. Customers have begun to complain that the bottles of the brand of soda produced in your company contain less than the advertised sixteen (16) ounces of product. Your boss wants to solve the problem at hand and has asked you to investigate. You have your employees pull thirty (30) bottles off the line at random from all the shifts at the bottling plant. You ask your employees to measure the amount of soda there is in each bottle. The mean is 15.85. The median is 15.99. The standard deviation is .6508. I need a 95% confidence Interval. How do I calculate with the data given?
With 95% confidence the population mean is between 15.6 and 16.1, based on 30 samples.