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

question 54

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, at the 0.01 level of significance, what conclusion should the microeconomist reach regarding the inclusion of Capital in the regression model?

• A)Capital is significant in explaining corporate sales and should be included in the model because its p-value is less than 0.01.
• B)Capital is significant in explaining corporate sales and should be included in the model because its p-value is more than 0.01.
• C)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.
• D)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.

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Definitions:

State Tax

A financial charge or levy imposed by a state government on income, property, or sales.

Marginal Cost

The added financial burden from producing one more unit of a product or service.

Marginal Revenue

The surplus revenue earned from the sale of an extra unit of a product or service.

Profit

The earnings obtained when income from a business endeavor outstrips the total expenses, costs, and taxes necessary to maintain that endeavor.