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: _______________________________________________________

Identify the key laws affecting labor unions and their impact on both employers and employees.

Recognize the main functions and types of labor unions in the U.S.

Describe the challenges and changes in labor union membership over the past decades.

Explain the concept of supply and demand in the context of labor markets and union dynamics.

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Definitions:

Three-Component Model

A theory in psychology that describes three major components of attitude: cognitive, affective, and behavioral.

Attitudes

A settled way of thinking or feeling about someone or something, typically reflected in a person's behavior.

Four-Component Model

A framework in moral psychology that outlines the cognitive processes involved in ethical decision-making, including moral sensitivity, judgment, motivation, and character.

Attitude

An attitude is a psychological construct that represents an individual's degree of like or dislike for an item, concept, or group, influencing behavior and perceptions.