Pregnant again the duration of human pregnancies may not, Ask an Expert

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Pregnant again. The duration of human pregnancies may not actually follow the Normal model described in Exercise 37.

a) Explain why it may be somewhat skewed to the left.

b) If the correct model is in fact skewed, does that change your answers to parts a, b, and c of Exercise 37? Explain why or why not for each.

Exercise 37

Pregnancy. Assume that the duration of human pregnancies can be described by a Normal model with mean 266 days and standard deviation 16 days.

a) What percentage of pregnancies should last between 270 and 280 days?

b) At least how many days should the longest 25% of all pregnancies last?

c) Suppose a certain obstetrician is currently providing prenatal care to 60 pregnant women. Let represent the mean length of their pregnancies. According to the Central Limit Theorem, what's the distribution of this sample mean, Specify the model, mean, and standard deviation.

d) What's the probability that the mean duration of these patients' pregnancies will be less than 260 days?

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Computer Engineering, Engineering

Category:- Computer Engineering
Reference No.:- M92191663

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