Economist
an Economist Is in the Process of Developing a Model

question 19

Short Answer

Economist
An economist is in the process of developing a model to predict the price of gold.She believes that the two most important variables are the price of a barrel of oil (x₁)and the interest rate (x₂).She proposes the first-order model with interaction $$y = \beta _ { 0 } + \beta _ { 1 } x _ { 1 } + \beta _ { 2 } x _ { 2 } + \beta _ { 3 } x _ { 1 } x _ { 2 } + \epsilon$$ A random sample of 20 daily observations was taken.The computer output is shown below. The regression equation is:
$$y = 115.6 + 22.3 x _ { 1 } + 14.7 x _ { 2 } - 1.36 x _ { 1 } x _ { 2 }$$
$\begin{array}{|l|ccc|}\hline \text { Predictor } & \text { Coef } & \text { SE Coef } & \text { T } \\\hline \text { Constant } & 115.6 & 78.1 & 1.480 \\x_{1} & 22.3 & 7.1 & 3.141 \\x_{2} & 14.7 & 6.3 & 2.333 \\x_{1} x_{2} & -1.36 & 0.52 & -2.615 \\\hline\end{array}$

$$\mathrm { S } = 20.9 \quad \mathrm { R } - \mathrm { Sq } = 55.4 \%$$
ANAL YSIS OF VARIANCE
$\begin{array}{|l|llll|}\hline \text { Source of Variation } & \text { DF } & \text { SS } & \text { MS } & \text { F } \\\hline \text { Regression } & 3 & 8661 & 2887.0 & 6.626 \\\text { Error } & 16 & 6971 & 435.7 & \\\hline \text { Total } & 19 & 15632 & & \\\hline\end{array}$

-Is there sufficient evidence at the 1% significance level to conclude that the price of a barrel of oil and the price of gold are linearly related?
Test statistic = ____________________ = ____________________
Critical Value = ____________________
Conclusion: ____________________
Interpretation: _______________________________________________________

Recognize the importance and process of recording office supplies expense.

Comprehend the procedure for accruing interest on borrowed funds.

Analyze and adjust for unearned and earned fees.

Construct journal entries for adjusting purposes in various accounting scenarios.

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Definitions:

Variable Costing

An approach in accounting where only direct materials, direct labor, and variable manufacturing overhead costs are considered in calculating the cost of products.

Net Operating Income

The total profit of a company after operating expenses are deducted, but before interests and taxes are subtracted.

Fixed Cost

Costs that do not change with the level of production or sales activity, such as rent or salaries.

Segment Margin

The amount of profit or loss produced by a particular segment of a business, considering only the revenues and expenses directly attributable to that segment.