Using data from the Current Population Survey, you estimate the following relationship between average hourly earnings (ahe)and the number of years of education (educ): 
= -4.58 + 1.71 educ
The heteroskedasticity-robust standard error on the slope is (0.03). Calculate the 95% confidence interval for the slope. Repeat the exercise using the 90% and then the 99% confidence interval. Can you reject the null hypothesis that the slope coefficient is zero in the population?
Definitions:
Unit Product Cost
The total cost (both fixed and variable) associated with producing a single unit of product.
Absorption Costing
A costing method that includes all manufacturing costs - direct materials, direct labor, and both variable and fixed overhead - in the cost of a product.
Total Period Cost
The sum of all costs incurred during a specific financial period, encompassing both manufacturing and non-manufacturing expenses.
Absorption Costing
An accounting method that includes all manufacturing costs (both fixed and variable) in the cost of a product.
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