The weight of a bag of corn chips is normally distributed with a mean of 22 ounces and a standard deviation of ½ ounces. Answer these questions.
a) What is the probability that a bag of corn chips is less than 20 ounces?
b) What is the probability that a bag of corn chips weighs more than 21 ounces?
c) What is the probability that a bag of corn chips weighs between 20.75 and 23.25 ounces?