Each bottle of a well-known brand of beer is supposed to contain 16 fluid ounces of beer. A sample of 10 bottles contained the following fluid ounces: 16.13, 16.02, 15.90, 15.83, 16.00, 15.79, 16.01, 16.04, 15.96, 16.20 11a. Calculate the: (1) sample mean, (2) sample variance, and (3) sample standard deviation