TABLE 16-5 a Contractor Developed a Multiplicative Time-Series Model to Forecast the to Forecast

question 61

Multiple Choice

TABLE 16-5
A contractor developed a multiplicative time-series model to forecast the number of contracts in future quarters, using quarterly data on number of contracts during the 3-year period from 1996 to 1998. The following is the resulting regression equation:
ln Y^{^} = 3.37 + 0.117 X - 0.083 Q₁ + 1.28 Q₂ + 0.617 Q₃
where
Y^{^} is the estimated number of contracts in a quarter
X is the coded quarterly value with X = 0 in the first quarter of 1996.
Q₁ is a dummy variable equal to 1 in the first quarter of a year and 0 otherwise.
Q₂ is a dummy variable equal to 1 in the second quarter of a year and 0 otherwise.
Q₃ is a dummy variable equal to 1 in the third quarter of a year and 0 otherwise.
-Referring to Table 16-5, in testing the coefficient for Q₁ in the regression equation (- 0.083) , the results were a t-statistic of - 0.66 and an associated p-value of 0.530. Which of the following is the best interpretation of this result?

• A) The number of contracts in the first quarter of the year is not significantly different than the number of contracts in an average quarter (? = 0.05).
• B) The number of contracts in the first quarter of the year is not significantly different than the number of contracts in the fourth quarter for a given coded quarterly value of X (? = 0.05).
• C) The number of contracts in the first quarter of the year is significantly different than the number of contracts in an average quarter (? = 0.05).
• D) The number of contracts in the first quarter of the year is significantly different than the number of contracts in the fourth quarter for a given coded quarterly value of X (? = 0.05).

Recognize the origin and differentiation potential of somites in vertebrates.

Understand the impact of genetic and environmental factors on neural tube defects.

Appreciate the chronological order of structures in neurulation and its importance.

Understand the role of the allantois in waste management during the development of certain vertebrates.

---

Definitions:

Specialty Key Chains

Products designed and manufactured with unique features or for specific niche markets, often used for personalization or as collectibles.

Obligation

A duty or commitment to fulfill an agreement, such as repaying a loan or delivering goods or services as contracted.

Liability

A financial obligation or debt that a company or individual owes to another entity.

Gross Profit

The financial metric calculated by subtracting the cost of goods sold from net sales, representing the profit made before deducting operating expenses.