The Lengths of Human Pregnancies Are Normally Distributed with a Mean

question 134

Multiple Choice

The lengths of human pregnancies are normally distributed with a mean of 268 days and a standard deviation of 15 days. What is the probability that a pregnancy lasts at least 300 days?

• A)0.0179
• B)0.4834
• C)0.0166
• D)0.9834

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Definitions:

Tight Junctions

Tight junctions are specialized connections between adjacent cells, forming a nearly impermeable barrier to fluid and ensuring the directional movement of molecules.

Digested Nutrients

Molecules resulting from the digestion process that are small enough to be absorbed by the body and used for energy, growth, and cell repair.

Epithelial Cells

Sheets of tightly packed cells that line organs and body cavities as well as make up the skin surface.

Vascular Tissue

Plant tissue involved in the transport of water and nutrients throughout the plant.