A Researcher Wishes to Determine Whether There Is a Difference

question 3

Multiple Choice

A researcher wishes to determine whether there is a difference in the average age of middle school, highschool, and college teachers. Teachers are randomly selected. Their ages are recorded below. Use α = 0.01.Which of the following is a correct statement about the means? $$\begin{array} { c c c } \hline \text { Middle School Teachers } & \text { High School Teachers } & \text { College Teachers } \\\hline 23 & 41 & 36 \\28 & 36 & 45 \\27 & 38 & 39 \\37 & 47 & 61 \\25 & 42 & 45 \\52 & 31 & 35 \\\hline\end{array}$$

• A) There is not enough evidence to suggest that the means are different.
• B) The mean age of middle school teachers is different from the mean age of high school teachers.
• C) The mean age of middle school teachers is different from the mean age of college teachers.
• D) The mean age of high school teachers is different from the mean age of college teachers.

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Definitions:

Functional Plans

Detailed strategies developed for specific departments or functions within an organization, such as marketing or human resources.

Comparative Advantage

The ability of an entity to produce a good or service at a lower opportunity cost compared to other producers.

Production Possibilities Frontier (PPF)

The Production Possibilities Frontier (PPF) is a curve depicting all maximum output possibilities for two goods, given a set of inputs.

Export

The selling of goods or services produced in one country to buyers in other countries.