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The mean incubation time of fertilized eggs is 19 days. Suppose the incubation times are approximately...

The mean incubation time of fertilized eggs is 19 days. Suppose the incubation times are approximately normally distributed with a standard deviation of 1 day. ​(a) Determine the 10th percentile for incubation times. ​(b) Determine the incubation times that make up the middle 97​%.

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