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.

---

Definitions:

Gene Interaction

The ways in which different genes influence each other's expression, often leading to complex traits or outcomes in an organism.

Calico Cats

Cats characterized by a tri-color fur pattern, typically involving patches of orange, black, and white, this pattern is most commonly found in female cats due to genetic linkage to the X chromosome.

X Chromosome Inactivation

A process in female mammals where one of the two X chromosomes is inactivated to ensure dosage compensation for gender-based genetic differences.

Phenotype

The set of observable characteristics of an individual resulting from the interaction of its genotype with the environment.