SOLUTION: 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) Determin
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Question 1100232: 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 14th percentile for incubation times.
(b) Determine the incubation times that make up the middle 97%. Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! 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 14th percentile for incubation times.
Find the z-value with a left-tail of 0.14::
invnorm(0.14) = -1.0803
Find the corresponding incubation time:: -1.0803*1+19 = 17.92 days
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(b) Determine the incubation times that make up the middle 97%.
Find the z-value with a left-tail of 0.015
invnorm(0.015) = -2.17
Note:: The z-value with a left-tail of 0.985 is +2.17
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Ans:
-2.17*1+19 = 16.83 days
+2.17*1+19 = 21.17 days
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Cheers,
Stan H.
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