Use the Data in the Table Categorizing Cholesterol Levels by the Ages

question 81

Multiple Choice

Use the data in the table categorizing cholesterol levels by the ages of the individuals in a study. If one person from the study is chosen at random, find the probability of the given event.
-The person is 60 or under. $\begin{array}{|l|c|c|c|}\hline & \begin{array}{c}\text { Normal } \\\text { Cholesterol }\end{array} & \begin{array}{c}\text { Elevated } \\\text { Cholesterol }\end{array} & \text { Total } \\\hline \begin{array}{l}\text { 30 and } \\\text { under }\end{array} & 17 & 4 & 21 \\\hline \text { 31-60 } & 49 & 32 & 81 \\\hline \text { 61 or older } & 22 & 76 & 98 \\\hline \text { Total } & 88 & 112 & 200 \\\hline\end{array}$

• A) \(\frac { 51 } { 100 }\)
• B) \(\frac { 49 } { 100 }\)
• C) \(\frac { 21 } { 200 }\)
• D) \(\frac { 81 } { 200 }\)

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Definitions:

Subliminal Perception

The detection of information below the level of conscious awareness.

Conscious Awareness

The state of being cognizant of and capable of recognizing one's own existence, sensations, thoughts, surroundings, etc.

Sensory Adaptation

The process by which sensory receptors become less sensitive to constant stimuli over time.

Cocktail-Party Effect

The ability to focus one's auditory attention on a particular stimulus while filtering out a range of other stimuli.