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. 
MSE = 4
Using the sums of the squares given above,determine the 90 percent confidence interval for the mean value of monthly tire sales when the advertising expenditure is $5,000.
Definitions:
Organization's Best Interests
The activities, decisions, or policies that are considered most beneficial or advantageous for the overall success and sustainability of an organization.
Unethical Behaviour
Actions or decisions that violate moral principles or societal norms.
Protect
To keep someone or something safe from harm, damage, or injury by providing appropriate measures or actions.
Ethical Decisions
Choices made based on moral principles and values, considering what is right and fair.
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