A Research Company Frequently Monitors Trends in the Use of Social

question 85

Essay

A research company frequently monitors trends in the use of social media by American Adults. The results of one survey of 1846 randomly selected adults looked at social media use versus age group. The table summarizes the survey results.
$\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\text { Age Group }$
$\text { Uses Social Media }\begin{array}{|l|c|c|c|c|r|}\hline& 18-29 & 30-49 & 50-64 & 65+ & \text { Total } \\\hline \text { Yes } & 328 & 417 & 288 & 114 & \mathbf{1 1 4 7} \\\hline \text { No } & 67 & 125 & 265 & 242 & \mathbf{6 9 9} \\\hline \text { Total } & \mathbf{3 9 5} & \mathbf{5 4 2} & \mathbf{5 5 3} & \mathbf{3 5 6} & \mathbf{1 8 4 6} \\\hline\end{array}$

-What is the marginal distribution of age groups?

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Definitions:

Flow Time

The total time a product spends in a manufacturing or service process from start to finish.

Work-In-Process

Items or components that are in the process of being manufactured but are not yet completed products.

Lateness

The measure of delay between the scheduled completion time and the actual completion time of a task or project.

Desktop Publishing

The process of using software to create visual documents for print or digital distribution, combining text and graphics.