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(a) Interpret the coefficients associated with the four explanatory variables.
A unit increase in Age would increase the earnings E by 0.75 units as the regression coefficient of Age is 0.75. Similarly, a unit increase in Education EDUC will increase earnings E by 0.80 units. Similarly, a unit increase in experience EX will increase earnings E by 0.15 units. However, a unit increase in Experience squared would result in -0.01 units decrease in earnings E as the regression coefficient is negative in the above equation....
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