Lengths of Pregnancies Are Normally Distributed with a Mean of 268

question 39

Essay

Lengths of pregnancies are normally distributed with a mean of 268 days and a standard deviation of 15 days. (a)Find the probability of a pregnancy lasting more than 250 days.
(b)Find the probability of a pregnancy lasting more than 280 days. Draw the diagram for
each and discuss the part of the solution that would be different for finding the requested
probabilities.

---

Definitions:

Radium

Radium is a naturally occurring radioactive metallic element, used in cancer treatment and previously in luminescent paint for watches and instruments.

Electrons

Subatomic particles with a negative charge, found orbiting the nucleus of an atom.

Neutral Atoms

Atoms that have an equal number of protons and electrons, resulting in no overall charge.

Gain Or Loss

A financial term indicating the positive or negative difference between the value of something at two different times.