The Discrete Random Variable X Is the Number of Passengers

question 34

Multiple Choice

The discrete random variable X is the number of passengers waiting at a bus stop.The table below shows the probability distribution for X.What is the expected value E(X) for this distribution?

• A)1.1
• B)1.3
• C)1.7
• D)1.9

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Definitions:

Autonomic Reflex

An involuntary response mediated by the autonomic nervous system to maintain homeostasis, such as the reflex that controls heart rate.

Motor Neuron

Neuron that innervates skeletal, smooth, or cardiac muscle fibers.

Vagus Nerve

The tenth cranial nerve, which innervates the heart, lungs, and digestive tract, thereby playing a significant role in controlling heart rate, gastrointestinal motility, and respiratory rate.

Parasympathetic Impulses

Nerve signals transmitted through the parasympathetic branch of the autonomic nervous system, generally working to conserve energy and restore the body to a state of calm.