The Mean of a Discrete Random Variable X

question 45

Multiple Choice

The mean of a discrete random variable x:

• A) is denoted by
• B) is denoted by E(x), because it is the value of x one can expect to find on average by numerous repetitions of the random experiment that generates the variable's actual values
• C) is correctly described by both "is denoted by" and "is denoted by E(x), because it is the value of x one can expect to find on average by numerous repetitions of the random experiment that generates the variable's actual values"
• D) is always = 0
• E) is none of these

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Definitions:

Omission Training

A behavioral modification technique involving the removal of a positive stimulus to decrease the likelihood of a behavior recurring.

Proactive Interference

The tendency of previously learned material to hinder subsequent learning.

Retroactive Interference

Retroactive interference occurs when new information interferes with the ability to recall previously learned information.

Dendrites

The branched projections of a neuron that act to conduct the electrochemical stimulation received from other neural cells to the cell body, or soma, of the neuron from which the dendrites project.