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

question 82

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,the observed value of the F statistic is given on the printout as 25.432.What are the degrees of freedom for this F statistic?

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

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Definitions:

Variable Ratio Schedule

A variable ratio schedule in reinforcement theory involves rewarding a behavior after an unpredictable number of responses, promoting a high and steady response rate.

Fixed Interval Schedule

A reinforcement schedule in operant conditioning where rewards are given at fixed intervals of time, provided the correct response is made.

Nonreinforced Responses

Reactions or actions that are not followed by reinforcement, thus not likely to be strengthened or learned.

Variable Interval Schedule

A reinforcement schedule in which a response is rewarded after an unpredictable amount of time has passed.