A Grouped Frequency Distribution Has a Mean of 200 and a Standard

question 85

Multiple Choice

A grouped frequency distribution has a mean of 200 and a standard deviation of 20. The class limits for one class are 220 up to 240. Based on the normal distribution, what is the probability that an observation would be in this class?

• A) 0.1359
• B) 0.3413
• C) 0.4772
• D) 0.8185

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Definitions:

ATP

Adenosine triphosphate, a molecule that stores and transfers energy within cells, enabling various cellular functions.

Oxygen

A chemical element with symbol O, essential for cellular respiration in aerobic organisms and required for most combustion.

Respiration

The metabolic process by which an organism obtains energy by reacting oxygen with glucose to give water, carbon dioxide, and ATP (energy).

Electrons

Subatomic particles with a negative charge that orbit the nucleus of an atom, involved in chemical reactions and electricity.