An Environmental Scientist Obtains a Sample of Water from an Irrigation

question 42

Multiple Choice

An environmental scientist obtains a sample of water from an irrigation canal that contains a certain type of bacteria at a concentration of 2 per milliliter. Find the standard deviation of the number of Bacteria in a 4-milliliter sample.

• A) 8
• B) 1.4
• C) 2.8
• D) 2

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Definitions:

Kinetic Energy

The energy possessed by an object due to its motion, proportional to its mass and the square of its velocity.

High Explosives

Substances that detonate, producing an explosion characterized by extremely rapid release of gas and heat, used in military and industrial applications.

Detonate

To explode or cause to explode with sudden intensity, often used in the context of explosives or chemical reactions.

Pressure

The force applied perpendicular to the surface of an object per unit area over which that force is distributed.