The time required to cook a pizza at a neighborhood pizza joint is normally distributed with a

Question:

The time required to cook a pizza at a neighborhood pizza joint is normally distributed with a mean of 12 minutes and a standard deviation of 2 minutes. Find the time for each event. Show your work.
a. Highest 5 percent
b. Lowest 50 percent
c. Middle 95 percent
d. Lowest 80 percent