Instruction 13-5
a Microeconomist Wants to Determine How Corporate Sales $\mathrm { R }$

question 77

Multiple Choice

Instruction 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
Regression Statistics
\begin{tabular} { l r } Multiple $\mathrm { R }$ & $0.830$ \\ \hline Square & $0.689$ \end{tabular}
R Square $\quad 0.689$
Adj. R Square $\quad 0.662$
Std. Error $\quad 17501.643$
Observations 26
ANOVA
$\begin{array} { l l l l l l } & \boldsymbol { d f } & \text { SS } & \text { MS } & \boldsymbol { F } & \text { Siguif } \boldsymbol { F } \\ \text { Regression } & 2 & 15579777040 & 7789888520 & 25.432 & 0.0001 \\ \text { Residual } & 23 & 7045072780 & 306307512 & & \\ \text { Total } & 25 & 22624849820 & & & \end{array}$
$\begin{array} { l l l l l } & \text { Coeff } & \text { StdError } & \boldsymbol { t } \text { Stat } & \boldsymbol { P } \text {-value } \\ \text { Intercept } & 15800.0000 & 6038.2999 & 2.617 & 0.0154 \\ \text { Capital } & 0.1245 & 0.2045 & 0.609 & 0.5485 \\ \text { Wages } & 7.0762 & 1.4729 & 4.804 & 0.0001 \end{array}$ Note: Adj.R Square = Adjusted R Square;Std.Error = Standard Error
-Referring to Instruction 13-5,at the 0.01 level of significance,what conclusion should the microeconomist draw regarding the inclusion of Capital in the regression model?

• A)Capital is not significant in explaining corporate sales and should not be included in the model because its p-value is more than 0.01.
• B)Capital is not significant in explaining corporate sales and should not be included in the model because its p-value is less than 0.01.
• C)Capital is significant in explaining corporate sales and should be included in the model because its p-value is more than 0.01.
• D)Capital is significant in explaining corporate sales and should be included in the model because its p-value is less than 0.01.

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Definitions:

Marginal Cost

The cost incurred to produce one additional unit of a good or service, critical for pricing and production decisions.

R&D

Research and Development, a business or governmental activity aimed at discovering new knowledge and its application.

Holdup

A situation in business where one party opportunistically takes advantage of another party because of preexisting commitments.

Pentagon

The headquarters of the United States Department of Defense, located in Arlington, Virginia, known for its distinctive five-sided shape.