Below you are given information on annual income and years of college education. 
a.Develop the least squares regression equation.
b.Estimate the yearly income of an individual with 6 years of college education.
c.Compute the coefficient of determination.
d.Use a t test to determine whether the slope is significantly different from zero. Let = 0.05.
e.At 95% confidence, perform an F test and determine whether or not the model is significant.
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