A Local Tire Dealer Wants to Predict the Number of Tires

question 14

Short Answer

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 equation of the least squares line is ŷ = 3 + 1x.
∑X = 24
∑X² = 124
∑Y = 42
∑Y² = 338
∑XY = 196
MSE = 4
Use the least squares regression equation and estimate the monthly tire sales when advertising expenditures = $4,000.

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Definitions:

Pollution Reduction

The process or policies aimed at decreasing the amount of pollutants released into the environment to improve environmental health and quality.

Pollution Permits

are allowances given to companies that limit the amount of pollution they are authorized to emit, which can be bought, sold, or traded, hence providing an economic incentive to reduce pollution.

Marginal Benefits

The additional satisfaction or utility a consumer receives from consuming an additional unit of a good or service.

Pollution Emissions

The release of pollutants into the environment, often as a byproduct of industrial operations, transportation, and other human activities, contributing to environmental degradation.