THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION

question 164

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

-Do these results allow us,at the 5% significance level,to conclude that the model is useful in predicting the price of gold?

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Definitions:

Direct Labour Hours

The total number of hours worked by employees directly involved in the manufacturing process or providing a service.

Variable Manufacturing Overhead

Costs that vary with the level of production output, such as utilities or commissions, which are indirectly associated with the manufacturing of products.

Total Variable Overhead Variance

Total variable overhead variance is the difference between the actual variable overhead costs incurred and the expected costs based on a standard cost model, indicating inefficiencies in production.

Variable Manuf. Overhead

Costs that vary with the level of production output and are related to the manufacturing process but cannot be directly traced to individual units produced.