SCENARIO 13-5
a Microeconomist Wants to Determine How Corporate Sales

question 205

Multiple Choice

SCENARIO 13-5
A microeconomist wants to determine how corporate sales are influenced by capital and wage spending by companies.She proceeds to randomly select 26 large corporations and record information in millions of dollars.The Microsoft Excel output below shows results of this multiple regression. SUMMARY OUTPUT
Regression Statistics
$\begin{array} { l l } \text { Multiple R } & 0.830 \\ \text { R Square } & 0.689 \\ \text { Adjusted R Square } & 0.662 \\ \text { Standard Error } & 17501.643 \\ \text { Observations } & 26 \end{array}$
ANOVA
$\begin{array} { l r c c c c } & d f & \text { SS } & \text { MS } & F & \text { Signif } F \\ \text { Regression } & 2 & 15579777040 & 7789888520 & 25.432 & 0.0001 \\ \text { Residual } & 23 & 7045072780 & 306307512 & & \\ \text { Total } & 25 & 22624849820 & & & \end{array}$


$\begin{array}{lrrrr} & \text { Coeff } & \text { StdError } & t \text { Stat } & \text { P-value } \\\text { Intercept } & 15800.0000 & 6038.2999 & 2.617 & 0.0154 \\\text { Capital } & 0.1245 & 0.2045 & 0.609 & 0.5485 \\\text { Wages } & 7.0762 & 1.4729 & 4.804 & 0.0001\end{array}$

-Referring to SCENARIO 13-5, the observed value of the F-statistic is given on the printout as25.432.What are the degrees of freedom for this F-statistic?

• A)25 for the numerator, 2 for the denominator
• B)2 for the numerator, 23 for the denominator
• C)23 for the numerator, 25 for the denominator
• D)2 for the numerator, 25 for the denominator

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Definitions:

Project Management

The discipline of initiating, planning, executing, controlling, and closing the work of a team to achieve specific goals and meet specific success criteria within a specified time.

Activity Times

Duration estimates for how long individual tasks within a project or process will take to complete.

PERT Times

Estimated durations for activities involved in a project, used in the Program Evaluation and Review Technique for planning and scheduling.

Optimistic Time

The “best” activity completion time that could be obtained in a PERT network.