The Following Are Partial Results of a Regression Analysis Involving $\alpha$

question 13

Essay

The following are partial results of a regression analysis involving sales (y in millions of dollars), advertising expenditures (x₁ in thousands of dollars), and number of salespeople (x₂) for a corporation. The regression was performed on a sample of 10 observations.
a.At $\alpha$ = 0.05, test for the significance of the coefficient of advertising.
b.If the company uses $20,000 in advertisement and has 300 salespersons, what are the expected sales? (Give your answer in dollars.)

---

Definitions:

Printed Text

The output of textual information in physical form, often through methods such as printing on paper.

Icteric Sclerae

The yellowing of the white part of the eyes, indicative of jaundice, usually due to liver dysfunction or bile duct obstruction.

Bilirubin

A yellow compound that occurs in the normal catabolic pathway that breaks down heme in red blood cells, often measured to assess liver function.

Dark-Skinned Patient

A term referring to a patient with a higher melanin content in their skin, which can have implications for certain medical treatments and diagnoses.