SCENARIO 2-5
the Following Are the Duration in Minutes of a Sample

question 103

Multiple Choice

SCENARIO 2-5
The following are the duration in minutes of a sample of long-distance phone calls made within the continental United States reported by one long-distance carrier. $$\begin{array} { l c } \text { Time(inMinutes) } & \begin{array} { c } \text { Relative } \\\text { Frequency }\end{array} \\\hline 0 \text { but less than } 5 & 0.37 \\5 \text { but less than } 10 & 0.22 \\10 \text { but less than } 15 & 0.15 \\15 \text { but less than } 20 & 0.10 \\20 \text { but less than } 25 & 0.07 \\25 \text { but less than } 30 & 0.07 \\30 \text { or more } & 0.02\end{array}$$
-Referring to Scenario 2-5, if 1,000 calls were randomly sampled, how many calls lasted under 10 minutes?

• A)220
• B)370
• C)410
• D)590

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Definitions:

Population Size

The total number of individuals within a defined area at the same time, influencing genetic diversity and a population's ability to survive environmental pressures.

Natality

The rate at which births occur in a population, measured as the number of births per unit of time, typically per year.

Mortality

The rate at which individuals die; the average per capita death rate.

Emigration

The movement of individuals out of a population. Compare with immigration.