The weight of crackers in a box is stated to be 16 ounces

1) The weight of crackers in a box is stated to be 16 ounces. The amount that the packaging machine puts in the boxes is believed to have a Normal model with mean 16.15 ounces and standard deviation 0.3 ounces. What is the probability that the mean weight of a 16-box case of crackers is below 16 ounces?