A pizza company advertises that it puts 0.5 pounds of real mozzarella cheese on its medium pizzas. Suppose that the
amount of cheese on a randomly selected medium pizza is normally
distributed with a mean value of 0.5 pounds and
a
standard deviation of 0.05 pounds. (Let y the amount of cheese on a
medium pizza. Round your answer to four
decimal
places.)
USE SALT
(a) What is the probability that the amount of cheese on a medium pizza is between 0.550 and 0.600 pounds?
x
(b) What is the probability that the amount of cheese on a medium pizza exceeds the mean value by more than 2
standard deviations?
0.0228
(c) What is the probability that four randomly selected medium pizzas all have at least 0.450 pounds of cheese?