Probability based on the Normal distribution.
The distribution of 9 ounce bags of a particular bag of potato chips is approximately Normal with the mean of 9.12 ounces and a standard deviation of 0.15 ounces.
a. What percentage of bags would contain more than 8.97 ounces of potato chips?
b. What percentage bags would contain between 8.65 ounces and 9.23 ounces of potato chips?