39. Pregnant again. The duration of human pregnanciesmay

Chapter 18, Problem 39

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39. Pregnant again. The duration of human pregnanciesmay not actually follow the Normal model described inExercise 37.a) Explain why it may be somewhat skewed to the left.b) If the correct model is in fact skewed, does that changeyour answers to parts a, b, and c of Exercise 37? Explainwhy or why not for each.

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