Find the best answers to your questions at Westonci.ca, where experts and enthusiasts provide accurate, reliable information. Discover solutions to your questions from experienced professionals across multiple fields on our comprehensive Q&A platform. Explore comprehensive solutions to your questions from knowledgeable professionals across various fields on our platform.

Assume that the duration of human pregnancies can be described by a Normal model with mean days and standard deviation days.
​a) What percentage of pregnancies should last between and ​days?
​b) At least how many days should the longest ​% of all pregnancies​ last?
​c) Suppose a certain obstetrician is currently providing prenatal care to 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 ​days?