The mean incubation time for a type of fertilized egg
The mean incubation time for a type of fertilized egg
kept at 100.6
100.6°F is 20
20 days. Suppose that the incubation times are approximately normally distributed with a standard deviation of 1
1 day
day.
(a) What is the probability that a randomly selected fertilized egg hatches in less than 18
18 days?
(b) What is the probability that a randomly selected fertilized egg hatches between 19
19 and 20
20 days?
(c) What is the probability that a randomly selected fertilized egg takes over 22
22 days to hatch?
(a) The probability that a randomly selected fertilized egg hatches in less than 18
18 days is
nothing
.
(Round to four decimal places as needed.)
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