The Following Is Part of the Results of a Regression $\alpha$

question 21

Essay

The following is part of the 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.If the company uses $40,000 in advertisement and has 30 salespersons, what are the expected sales? Give your answer in dollars.
b.At $\alpha$ = 0.05, test for the significance of the coefficient of advertising.
c.At $\alpha$ = 0.05, test for the significance of the coefficient of the number of salespeople.

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Definitions:

Vocal Apparatus

The collective term for the organs and structures of the body involved in the production of voice and speech.

Rudimentary Language Skills

Basic abilities in understanding and using language, usually referring to the initial stages of language acquisition.

Symbolic Aspects

The representational features or meanings that objects, actions, or terms hold beyond their literal, tangible dimensions.

Linguistic Relativity Hypothesis

The hypothesis that a language's structure can shape its speakers' perception of reality or thought processes.