2. A mix beverage machine is adjusted to release a certain amount of syrup into a chamber where it is mixed with carbonated water. It is known that the amount of syrup follows a normal distribution (variance unknown). A random sample of 25 beverages was found to have a mean syrup amount 1.376 fl. oz. and a standard deviation 0.018 fl. oz. a) Construct a 95% two-sided CI on the mean syrup amount. (10) b) Construct a 90% upper CI on the mean syrup amoun