Figure A shows information about a random sample of students' math SAT scores and GPAs at an unidentified four-Year College.
a. Use the formula on the graph to predict the GPA for a person with a math SAT score of 600.
b. Figure B shows both a prediction interval and a confidence interval for a new SAT of 600; report both.
c. One student wants to estimate the GPA he will achieve if he attends that school. Should he use the prediction interval or the confidence interval? Explain.
d. Report the interval obtained for part c. Is it very useful? Explain.