The mean incubation time for a type of fertilized egg kept at a certain temperature is 24 days. Suppose that the incubation times are approximately normally distributed with a standard deviation of 1 day. Complete parts (a) through (e) below.[e] Would it be unusual tor an egg to hatch in less than 21 days? Why? The probability of an egg hatching in less than 21 days is D so it I: be unusual, since the probability is E than 0.05. [Round to four decimal places as needed}