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 78

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 probability that at least 1 student comes to office hours on any given Monday? $$\begin{array} { l c c c c r } X & 0 & 1 & 2 & 3 & \text { Total } \\P ( X ) & 40 & 30 & 20 & 10 & 1.00\end{array}$$

• A).30
• B).40
• C).50
• D).60

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Definitions:

Solid foods

Nutrient-rich foods introduced to an infant's diet in addition to breastmilk or formula, typically starting around 6 months of age to support growth and development.

Dendrites

Root-like parts of neurons that receive impulses from other neurons.

Neurons

The basic working units of the brain, specialized cells that transmit information through electrical and chemical signals.

Axon terminals

The endings of axons, responsible for transmitting signals through neurotransmitters to other neurons or muscles.