A Statistics Professor Receives an Average of Five E-Mail Messages

question 15

Multiple Choice

A statistics professor receives an average of five e-mail messages per day from students. Assume the number of messages approximates a Poisson distribution.
-What is the probability that on a randomly selected day she will have five messages?

• A)0.0067
• B)0.875
• C)0.175
• D)1.0

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Definitions:

Motor Neurons

Nerve cells that transmit impulses from the central nervous system to muscles or glands, eliciting a response.

Skeletal Muscle

A type of muscle tissue that is attached to bones and enables voluntary movements of the body parts.

Myasthenia Gravis

An autoimmune disorder characterized by weakness and fatigue of the skeletal muscles, caused by a disruption in the communication between nerves and muscles.

Acetylcholinesterase Activity

The process by which the enzyme acetylcholinesterase breaks down acetylcholine, a neurotransmitter, in the synaptic cleft to terminate the transmission of a nerve impulse.