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 = 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:
Registration Under
The process of officially recording or enlisting something or someone under certain conditions or regulations, often related to securities laws.
1933 Act
A U.S. federal law, officially known as the Securities Act of 1933, enacted to ensure more transparency in financial statements to protect investors from fraud.
Working Capital
The difference between a company's current assets and its current liabilities, indicative of its operational liquidity.
Tender Offer
is a public solicitation by a party proposing to buy shares from shareholders of a publicly-traded company at a specified price for a certain period.
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