The mean incubation time of fertilized chicken eggs kept at

The mean incubation time of fertilized chicken eggs kept at 100.4 degrees is 21 days. Suppose that the incubation times are approximately normally distributed with a standard deviation of 2 days. a) What is the probability that a randomly selected fertilized egg hatches in less than 17 days? b) What is the probability that a randomly selected fertilized egg hatches between 19 and 21 days? c) What is the probability that a randomly selected fertilized egg takes over 25 days to hatch?

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