The Discrete Random Variable X Is the Number of Students $$\begin{array} { l c c c c r } X & 0 & 1 & 2 & 3 & \text { Total } \\P ( X ) & 40 & 30 & 20 & 10 & 1.00\end{array}$$

question 77

Multiple Choice

The discrete random variable X is the number of students that show up for Professor Smith's office hours on Monday afternoons. The table below shows the probability distribution for X. What is the expected value E(X) for this distribution? $$\begin{array} { l c c c c r } X & 0 & 1 & 2 & 3 & \text { Total } \\P ( X ) & 40 & 30 & 20 & 10 & 1.00\end{array}$$

• A)1.2
• B)1.0
• C)1.5
• D)2.0

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Definitions:

Mixed Emotional Reactions

Experiencing multiple emotions at the same time, which might be conflicting or complementary.

Psychotherapist

A trained professional who treats mental health issues and emotional difficulties through psychological techniques and therapies.

Generalization

In psychology, the process of responding similarly to stimuli that are similar but not identical to the original conditioned stimulus.

Discrimination

The unjust or prejudicial treatment of different categories of people or things, especially on the grounds of race, age, or sex.