Compute and Interpret Probabilities Using the Empirical Method
-In 1999

question 173

Multiple Choice

Compute and Interpret Probabilities Using the Empirical Method
-In 1999 the stock market took big swings up and down. A survey of 983 adult investors asked how often they tracked their portfolio. The table shows the investor responses. What is the probability that an adult investor tracks his or her portfolio daily Express your answer as a simplified fraction and as a decimal rounded to three decimal places. $\begin{array}{l|l}\hline \text { How frequently? } & \text { Response } \\\hline \text { Daily } & 240 \\\hline \text { Weekly } & 262 \\\hline \text { Monthly } & 281 \\\hline \text { Couple times a year } & 149 \\\hline \text { Don't track } & 51\end{array}$

• A) \(\frac { 240 } { 983 } ; 0.244\)
• B) \(\frac { 262 } { 983 } ; 0.267\)
• C) \(\frac { 281 } { 983 } ; 0.286\)
• D) \(\frac { 149 } { 983 } ; 0.152\) The chart below shows the percentage of people in a questionnaire who bought or leased the listed car models and were very satisfied with the experience. \[\begin{array} { l l }
• \text { Model A } & 81 \% \\
• \text { Model B } & 79 \% \\
• \text { Model C } & 73 \% \\
• \text { Model D } & 61 \% \\
• \text { Model E } & 59 \% \\
• \text { Model F } & 57 \%
• \end{array}\]

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Definitions:

Subarachnoid Space

The space between the arachnoid membrane and the pia mater of the brain and spinal cord, filled with cerebrospinal fluid.

Arachnoid Mater

A delicate membrane that encloses the brain and spinal cord, sitting between the pia mater and the dura mater.

Lateral View

A perspective or representation of an object or structure as seen from the side.

Temporal Lobe

A region of the brain involved in processing auditory information, memory, and integrating some aspects of speech and language.