THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION

question 67

Essay

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
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 model y = β₀ + β₁x₁ + β₂x₂ + β₃x₁x₃ + ε.A random sample of 20 daily observations was taken.The computer output is shown below.
THE REGRESSION EQUATION IS
y = 115.6 + 22.3x₁ + 14.7x₂ - 1.36x₁x₂

S = 20.9 R-Sq = 55.4%
ANALYSIS OF VARIANCE

-Is there sufficient evidence at the 1% significance level to conclude that the interaction term should be retained?

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Definitions:

Accounts Receivable

Unpaid revenue from customers for services or goods a company has provided.

Display Counters

Furniture or fixtures used in retail settings to showcase products to customers prominently.

Average Tax Rate

The ratio of the total amount of taxes paid to the total tax base (taxable income or spending), showing the fraction of income or expenditure paid in taxes.

Capital Gains

The profit that results from selling an asset for more than its purchase price, often related to investments or real estate.