Find the Indicated Probability If One of the 255 Subjects Is Randomly Selected, Find

question 151

Multiple Choice

Find the indicated probability. Express your answer as a simplified fraction unless otherwise noted.
-The table below shows the soft drinks preferences of people in three age groups. $$\begin{array} { r | c c c } & \text { cola } & \text { root beer } & \text { lemon-lime } \\\hline \text { under 21 years of age } & 40 & 25 & 20 \\\text { between 21 and 40 } & 35 & 20 & 30 \\\text { over 40 years of age } & 20 & 30 & 35\end{array}$$
If one of the 255 subjects is randomly selected, find the probability that the person is over 40 and drinks cola.

• A) \(\frac { 4 } { 51 }\)
• B) \(\frac { 4 } { 17 }\)
• C) \(\frac { 4 } { 19 }\)
• D) None of the above is correct.

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Definitions:

Hertz

A unit of frequency in the International System of Units (SI), equal to one cycle per second.

Decibels

The units of measurement for sound intensity, indicating the loudness of sounds on a logarithmic scale.

Amplitude

The maximum extent of a vibration or oscillation, measured from the position of equilibrium.

Hertz

In the International System of Units (SI), the measure of frequency that is equivalent to one cycle every second.