Solve the following:
Steve Goodman, production foreman for the Florida Gold Fruit Company, estimates that the average sale of oranges is 4,700 and the standard deviation is 500 oranges. Sales follow a normal distribution.
a. What is the probability that sales will be greater than 5,500 oranges?
b. What is the probability that sales will be greater than 4,500 oranges?
c. What is the probability that sales will be less than 4,900?
d. What is the probability that sales will be less than 4,300?