The mean incubation time for a type of fertilized egg kept at 100.7° F is 22days. Suppose that the incubation times are approximately normally distributed with a standard deviation of 2 days.
(a) The probability that a randomly selected fertilized egg hatches in less than 20 days is __.(Round to four decimal places as needed.)
(b) The probability that a randomly selected fertilized egg hatches between 18 and 22 days is __.(Round to four decimal places as needed.)
(c) The probability that a randomly selected fertilized egg takes over 24 days to hatch is __.(Round to four decimal places as needed.)