Find Conditional and Marginal Distributions A) 31% (34 / 64)

question 9

Multiple Choice

Find conditional and marginal distributions.
-A full service brokerage firm gathered information on how their clients were investing
For retirement. Based on age, clients were categorized according to where the largest
Percentage of their retirement portfolio was invested and shown in the table below. Of
The clients over age 50, the percentage who invest in mutual funds is $$\begin{array} { | l | c | c | c | } \hline & \begin{array} { l } \text { Age 50 or } \\\text { Younger }\end{array} & \begin{array} { l } \text { Over } \\\text { Age 50 }\end{array} & \text { Total } \\\hline \text { Mutual Funds } & 30 & 34 & \mathbf { 6 4 } \\\hline \text { Stocks } & 37 & 45 & \mathbf { 8 2 } \\\hline \text { Bonds } & 19 & 23 & \mathbf { 4 2 } \\\hline \text { Total } & \mathbf { 8 6 } & \mathbf { 1 0 2 } & \mathbf { 1 8 8 } \\\hline\end{array}$$

• A) 3.1% (34 / 64).
• B) 33.3% (34 / 102).
• C) 18.1% (34 / 188).
• D) 34% (64 / 188).
• E) 54.3% (102 / 188).

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Definitions:

Experimental Material

The group or class of objects or subjects that is being studied in an experiment.

Independent Variable

The variable in an experiment that is manipulated or changed by the researcher to observe its effects on the dependent variable.

FDA

The Food and Drug Administration, a federal agency of the United States responsible for protecting and promoting public health through the control and supervision of food safety, tobacco products, dietary supplements, prescription and over-the-counter pharmaceutical drugs, vaccines, biopharmaceuticals, medical devices, and veterinary products.

Predictions

Statements about what will happen in the future based on current information or trends.