A production engineer has designed a system to remove sugars from a liquid product. Each product must contain an amount of sugar less than or equal to 12g. The engineer randomly samples 3 products and finds the sugar contents to be 4.5, 3.7, and 3.2g respectively. The sample mean is 3.8g and the sample standard deviation is 0.6557. How certain can the engineer be that no product in the population of products will contain a sugar content greater than 12g?