The Lengths of Pregnancies Are Normally Distributed with a Mean

question 156

Multiple Choice

The lengths of pregnancies are normally distributed with a mean of 268 days and a standard deviation of 15 days. If 64 women are randomly selected, find the probability that they have a mean pregnancy between 266
Days and 268 days.

• A)0.3577
• B)0.7881
• C)0.2881
• D)0.5517

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Definitions:

Germinal Stage

The initial stage of human embryonic development that occurs in the first two weeks after conception.

Oxygen and Nutrients

Essential components for the survival of cells and organisms, providing energy and maintaining basic functions.

Placenta

An organ that develops in the uterus during pregnancy, facilitating the exchange of nutrients, blood, and waste products between mother and fetus.

Fetus

The developmental stage of a human being in utero from the end of the eighth week after conception until birth.