The sample standard deviation of WAGE is 15.96 and the sum of squared residuals from the regression above is 199,705.37. Compute R2 (b) Using the answer to (a), what is the correlation between WAGE and EDUC? [Hint: What is the correlation between WAGE and the fitted value \W AGE] (c) The sample mean and variance of EDUC are 14.315 and 8.555, respectively. Calculate the leverage of observations with EDUC = 5, 16, and 21. Should any of the values be considered large? (d) Omitting the ninth observation, a person with 21 years of education and wage rate $30.76, and re- estimating the model we find = 14.25 and an estimated slope of 2.470095. Calculate DFBETAS for this observation. Should it be considered large