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:

Family Home

A dwelling where members of a family reside, offering a stable and nurturing environment.

Three-Way Conference

A meeting involving the student, teacher, and parent(s) to discuss the student's progress, strengths, and areas for improvement.

Guidance Counselor

A professional who provides students with academic, career, and personal/social advice and guidance.

Virtual Conferences

Online events that bring individuals together through digital platforms for discussion, presentations, and networking.