Help Me With This Problem Please!!

#1
describe linear regression and correlation analysis. Assuming that the hand-held computer proposal will be implemented, use your knowledge of regression and correlation analysis to determine if the general aptitude test and/or the manual dexterity test should be used to screen potential employees. How should the regression results be used in screening potential employees? An applicant named Stan Still took the two tests and got a 158 on the general aptitude test and a 162 on the manual dexterity test. Using regression, predict what his performance rating using the hand-held computers. Provide a 95% confidence interval around this estimate.

....I dont know where to start. Someone, anyone plz help me. Much appreciated. Thanks!