The Following Table Presents the Probability Distribution of the Number $\sigma _ { x }$

question 35

Multiple Choice

The following table presents the probability distribution of the number of vacations X taken last year for a randomly chosen family. Compute the standard deviation $\sigma _ { x }$

$\begin{array} { c | c c c c c } x & 0 & 1 & 2 & 3 & 4 \\\hline P ( x ) & 0.11 & 0.69 & 0.13 & 0.05 & 0.02\end{array}$

• A) 1.18
• B) 1.29
• C) 0.59
• D) 0.77

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Definitions:

EEG

Electroencephalography, a non-invasive method to record electrical activity of the brain using sensors placed along the scalp.

Electrical Activity

Refers to the movement of electrical charges or signals through neurons or other tissues in the body, playing a critical role in bodily functions and processes.

Brain

The organ located in the skull responsible for cognitive functions, emotions, and controlling the body's movements.

Magnetic Resonance Imaging

A medical imaging technique used to visualize detailed internal structures using strong magnetic fields and radio waves.