The mean incubation time for a type of fertilized egg kept at 100.5 F is 23 days. Suppose that the incubation times are approximately normally distributed with a standard deviation of 1 day.

a) The probability that a randomly selected fertilized egg hatches in less than 21 days is? round to four decimal places as needed

b) The probability that a randomly selected fertilized egg hatches between 22 and 23 day is? round to four decimals places as needed

c) The probability that a randomly selected fertilized egg takes over 25 days to hatch is? round to four decimals places as needed