TABLE 14-5
a Microeconomist Wants to Determine How Corporate Sales

question 21

Multiple Choice

TABLE 14-5
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.
$$\begin{array}{l}\text { Regression Statistics }\\\begin{array} { l r } \hline \text { Multiple R } & 0.830 \\\text { R Square } & 0.689 \\\text { Adjusted R Square } & 0.662 \\\text { Standard Error } & 17501.643 \\\text { Observations } & 26\end{array}\end{array}$$

ANOVA
$\begin{array}{lcrrrr}\hline & \text { d f }&\text { S S } & \text { M S } & \text { F }&\text { Significance F } \\\hline \text {Regression} & 2 & 15579777040 & 7789888520 & 25.432 & 0.0001 \\\text {Residual }& 23 & 7045072780 & 306307512 & & \\\text {Total }& 25 & 22624849820 & & & \\\hline\end{array}$

$$\begin{array} { l c c c c } & \text { Coefficients } & \text { Standard Error} & \text { t Stat } & \text { p-value } \\\text { Intercept } & 15800.0000 & 6038.2999 & 2.617 & 0.0154 \\\text { C apital } & 0.1245 & 0.2045 & 0.609 & 0.5485 \\\text { W ages } & 7.0762 & 1.4729 & 4.804 & 0.0001 \\\hline\end{array}$$

-Referring to Table 14-5, 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 significant in explaining corporate sales and should 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 not significant in explaining corporate sales and should not 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:

Mean Battery Life

The average duration that a battery can power a device before depletion, calculated from a sample or population of batteries.

Production Method

The process or technique used in the creation of goods and services, often categorized by levels of automation and labor requirements.

Mean Price

The average price of a set of products or securities, calculated by adding all prices together and dividing by the number of prices.

Litre Of Gas

A unit of measurement representing the volume of gasoline, commonly used to quantify fuel in many countries, equivalent to 1000 cubic centimeters.