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The mean incubation time for a type of fertilized egg kept at 100.7​°F is 21 days.

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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?

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​(a) The probability that a randomly selected fertilized egg hatches in less than 19 days is______ . ATTACHMENT PREVIEW Download attachment

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