The mean incubation time for a type of fertilized egg kept at 100.7°F is 21 days. Suppose that the incubation times are approximately normally distributed with a standard deviation of 1 day.
(a) What is the probability that a randomly selected fertilized egg hatches in less than 19 days?
(b) What is the probability that a randomly selected fertilized egg hatches between 20 and 21 days?
(c) What is the probability that a randomly selected fertilized egg takes over 23 days to hatch?
(a) The probability that a randomly selected fertilized egg hatches in less than 19 days is______ .
0 comments