Elementary Statistics Departmental Final Exam Part I (Form B) EmpliD d. The equa
ID: 3375737 • Letter: E
Question
Elementary Statistics Departmental Final Exam Part I (Form B) EmpliD d. The equation of the Least Squares Regression (LSR) Line is y = 8.79 + 0.29x. Circle the correct choice and fill in the blank in the following statement: As a State College Attainment increases by 5 percent, the predicted State Median Hourly Wage (increases/decreases) by dollars. (2 points) e. Use LSR Line equation to find the best predicted Median Hourly Wage, in dollars, for a State where College Attainment is 23 percent (3 points)
Explanation / Answer
As the complete question is not available, I'm assuming
y = State median hourly wage
x = College attainment (in percentage)
y = 8.79 + 0.29x
d.
As a state college attainment increses by 5%, the predicted state median hourly wage (increases/ decreases) by 1.45 dollars
Explanation
When college attainment increases by 5%.
Suppose initial value is x, after increase value is x+5, The difference in y is given by
= (8.79 + 0.29(x+5)) - (8.79 + 0.29x) = 0.29*5 = 1.45
e.
The median hourly wage is 15.46 dollars in that state
Explanation:
The best predicted value of State median hourly wage is given by
y = 8.79 + 0.29x = 8.79 + 0.29*23 = 15.46
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