Suppose that you're at plant doing an inspection on machine which dispenses cola in cups. You take a sample of 16 cups off of machine and record how many fluid ounces of cola are in each of these cups. You obtain the following data: 12, 12.2, 11.7, 11.6, 11.8, 11.8, 12, 12, 12.1, 12, 11.8, 11.9, 12, 11.7, 11.8, 11.9. Suppose that the variable 'number of fluid ounces dispensed' is normally distributed. Find the 95% confidence interval for the mean the amount of cola (in ounces) dispensed into the cups by the machine. Please write down conclusion in a complete sentence. Also find the mean of this sample.