A Sociologist Wants to Determine If the Life Expectancy of People

question 8

Multiple Choice

A sociologist wants to determine if the life expectancy of people in Africa is less than the expectancy of people in Asia. The data obtained is shown in the table below.
$\begin{array}{ll}\hline \text { Africa } & \text { Asia } \\\overline{\bar{X}}_{1}=63.3 \mathrm{yr} . & \bar{X}_{2}=65.2 \mathrm{yr} . \\\sigma_{1}=9.1 \mathrm{yr} . & \sigma_{2}=7.3 \mathrm{yr} . \\n_{1}=120 & n_{2}=150 \\\hline\end{array}$
What is an appropriate null hypothesis?

• A) \(H _ { 0 } : \mu _ { 1 } < \mu _ { 2 }\)
• B) \(H _ { 0 } : \mu _ { 1 } \neq \mu _ { 2 }\)
• C) \(H _ { 0 } : \mu _ { 1 } = \mu _ { 2 }\)
• D) \(H _ { 0 } : \mu _ { 1 } > \mu _ { 2 }\)

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Definitions:

Production Possibility Frontier

Describes the maximum possible output combinations of two goods or services an economy can achieve when all resources are fully and efficiently utilized.

Unemployment Rate

The percentage of the labor force that is jobless and actively looking for employment.

Ppf

Production Possibility Frontier, a curve depicting all maximum output possibilities for two or more goods given a set of inputs.

Capital Goods

Long-term assets used in the production of other goods and services, such as machinery, buildings, and equipment.