Questions Pertain to the Following Table (Table 10), Which Presents

question 13

Multiple Choice

Questions pertain to the following table (Table 10) , which presents results for a fictitious multiple regression analysis predicting women's positive health practices in pregnancy on the basis of seven independent variables.
$\begin{array}{c}\text { Table } 10\\\text { Multiple Regression for Predicting Women's Positive Health Practices }\\\begin{array}{|l|l|c|c|c|}\hline \text { Step } & \text { Predictor Variable } & \text { Beta } & \Delta R^{2} & \begin{array}{c}\text { Cumulative } \\R^{2}\end{array} \\\hline 1 & \text { Age } & .09^{*} & .35^{* * *} & .35^{* * *} \\\hline & \text { Highest grade completed } & .24^{* *} & & \\\hline & \text { Total household income } & .01 & & \\\hline & \text { Married } & .17^{* *} & & \\\hline & \text { White } & .03 & & \\\hline 2 & \text { Prenatal depression } & -.19^{* *} & .05^{*} & .40^{* * *} \\\hline 3 & \text { Maternal-fetal attachment } & .25^{* *} & .06^{*} & .46^{* * *} \\\hline\end{array}\end{array}$
$* p<.05 \quad * * p<.01 \quad * * * p<.001 \quad \text { Overall } F(8,250) =10.98 p<.001$
-Refer to Table 10. How much variance in positive healthcare practices was explained by demographic/background variables?

• A) 9.0%
• B) 12.25%
• C) 35.0%
• D) 46.0%

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Definitions:

Output Power

The amount of power, typically measured in watts, that a device, system, or process delivers to its load.

Open Delta

An open delta connection refers to a method of transformer connection used in electrical systems that employs two transformers to create a three-phase supply with a smaller capacity than a full delta connection.

Three-Phase Transformer

A type of transformer used in three-phase systems, consisting of three sets of primary and secondary windings, used to step up or step down voltages in power distribution.

Single Phase Loads

Electrical loads operating with a single phase power supply, characterized by the use of two wires: one power wire and one neutral wire.