A local tire dealer wants to predict the number of tires sold each month.He believes that the number of tires sold is a linear function of the amount of money invested in advertising.He randomly selects 6 months of data consisting of tire sales (in thousands of tires)and advertising expenditures (in thousands of dollars).Based on the data set with 6 observations,the simple linear regression model yielded the following results. 
Find the rejection point for the t statistic at α = .05 and test H0: β1 ≤ 0 vs.Ha: β1 > 0.
Definitions:
Product Differentiation
Product differentiation is the process of distinguishing a product from others in the market, through features, branding, or quality, to attract a specific consumer segment.
Decreasing-Cost Industries
Industries in which costs per unit decline as the scale of production increases, often due to efficiencies gained in the production process.
Legal Protection
Measures, laws, and regulations designed to safeguard individuals' rights, property, and well-being in a legal context.
Lead Innovation
The process of spearheading new developments and advancements in technology, products, or methods to gain a competitive edge.
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