Statistic students weighed a sample of 9 randomly chosen cans of coke, and found the sample weight to be 12,06 oz. The weight of the population of cans of coke are normally distributed with a mean of 12.00 oz and a population standard deviation of 0.11 oz. What is the standard error? What is the probability that a sample of 9 cans will have a mean amount of at least 12.06? What is the probability that a sample of 9 cans will have a sample mean weight between 11.99 oz and 12.04 oz?