A Collection of Paired Data Consists of the Number of Years

question 29

Multiple Choice

A collection of paired data consists of the number of years that students have studied Spanish and their scores on a Spanish language proficiency test. A computer program was used to obtain the least squares linear regression line and the computer output is shown below. Along with the paired sample data, the program was also given an x value of 2 (years of study) to be used for predicting test score. $$\text { The regression equation is }$$
$\begin{array}{l}\text { Score }=31.55+10.90 \text { Years. }\\\begin{array}{lllcc}\text { Predictor } & \text { Coef } & \text { StDev } & \text { T } & \text { P } \\\text { Constant } & 31.55 & 6.360 & 4.96 & 0.000 \\\text { Years } & 10.90 & 1.744 & 6.25 & 0.000\end{array}\end{array}$
$$S=5.651 \quad R-S q=83.0 \% \quad R-S q(\text { Adj }) =82.7 \%$$
Predicted values
$\begin{array}{llcc}\text { Fit } & \text { StDev Fit } & 95.0 \% \text { CI } & 95.0 \% \text { PI } \\ 53.35 & 3.168 & (42.72,63.98) & (31.61,75.09) \end{array}$ If a person studies 4.5 years, what is the single value that is the best predicted test score? Assume that there is a significant linear correlation between years of study and test score.

• A)53.35
• B)80.6
• C)83.0
• D)49.1

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Definitions:

Instrumental Role

A concept in sociology referring to the task-oriented role in a family or society, often associated with the provision of resources and external support.

Expressive Role

The position of the family member who provides emotional support and nurturing.

Gender Stratification

The unequal distribution of wealth, power, and privilege across genders within a society.

Functionalist

Adhering to the perspective in sociology that sees society as a complex system whose parts work together to maintain balance and social equilibrium.