Instruction 12-9
It Is Believed That,the Average Numbers of Hours

question 56

Multiple Choice

Instruction 12-9
It is believed that,the average numbers of hours spent studying per day (HOURS) during undergraduate education should have a positive linear relationship with the starting salary (SALARY,measured in thousands of dollars per month) after graduation.Given below is the Microsoft Excel output for predicting starting salary (Y) using number of hours spent studying per day (X) for a sample of 51 students.NOTE: Only partial output is shown.
$\begin{array}{|l|r|}\hline{\text { Regression Statistics }} \\\hline \text { Multiple R } & 0.8857 \\\hline \text { R Square } & 0.7845 \\\hline \text { Adjusted R Square } & 0.7801 \\\hline \text { Standard Error } & 1.3704 \\\hline \text { Observations } & 51 \\\hline\end{array}$
ANOVA
$\begin{array}{|l|r|r|c|c|c|}\hline & d f & \text { SS } & \text { MS } & F & \text { Significance } F \\\hline \text { Regression } & 1 & 335.0472 & 335.0473 & 178.3859 & \\\hline \text { Residual } & & & 1.8782 & & \\\hline \text { Total } & 50 & 427.0798 & & & \\\hline\end{array}$


$\begin{array}{l|r|rr|r|r|r|} \hline& \text { Coefficients } & \text { Standered Error } & t \text { Stat } & \text { P-value } & \text { Lorer 95\% } & \text { Upper 95\% } \\\hline \text { Intercept } & -1.8940 & 0.4018 & -4.7134 & 2.051 \mathrm{E}-05 & -2.7015 & -1.0865 \\\hline \text { Hours } & 0.9795 & 0.0733 & 13.3561 & 5.944 \mathrm{E}-18 & 0.8321 & 1.1269 \\\hline\end{array}$ Note: 2.051E-05 = 2.051 * 10^-0.5 and 5.944E-18 = 5.944 * 10^-18.
-Referring to Instruction 12-9,the estimated average change in salary (in thousands of dollars) as a result of spending an extra hour per day studying is

• A)0.9795.
• B)0.7845.
• C)335.0473.
• D)-1.8940.

Recognize the role of physical activity and lifestyle choices in the well-being of older adults.

Identify the importance of social relationships, conflict management, and leisure activities in the lives of older adults.

Describe the impact of aging on cognition, including memory and perception of time.

Understand the concepts of ego integrity versus despair and body transcendence versus body preoccupation in the context of Erikson's psychosocial theory.

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