If an American Household Were Chosen at Random and Asked

question 14

Multiple Choice

If an American household were chosen at random and asked how many tablet computers it owned, here are the probabilities as determined by a recent survey:

This is a legitimate assignment of probabilities because it satisfies these rules:

• A) all the probabilities are between 0 and 1.
• B) all the probabilities are between -1 and 1.
• C) the sum of all the probabilities is exactly 1.
• D) All the probabilities are between 0 and 1, and the sum of all the probabilities is exactly 1.
• E) All the probabilities are between -1 and 1, and the sum of all the probabilities is exactly 1..

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Definitions:

Corticospinal Tract

A pathway in the central nervous system that conducts impulses from the brain to the spinal cord, controlling voluntary muscle movements.

Extrapyramidal Tract

A network of neurons in the brain involved in the coordination and control of motor functions, particularly those responsible for involuntary movements.

Myelin

A fatty substance that encases and insulates nerve fibers, speeding up electrical impulses between neurons and crucial for proper nervous system functions.

Demyelinating Process

A pathological condition in which the myelin sheath of nerve fibers is damaged, disrupting neural conductivity.