Estimate: GPA = ₀ + ₁GRE + , where GRE is a students score on the math portion of the Graduate Record Examination (GRE) score and GPA is the students grade point average in graduate school.

a. Use Rs predict() function to construct the 90% confidence interval for the expected GPA for an individual who scored 710 on the math portion of the GRE. (Round answers to 2 decimal places.) b. Use Rs predict() function to construct the 90% prediction interval for GPA for an individual who scored 710 on the math portion of the GRE. (Round answers to 2 decimal places.)

GPA	GRE
3.8	640
3	670
2.6	750
2.6	750
3	700
3.3	680
3.9	670
2.5	750
2.9	740
3.3	650
2.2	750
2.5	740
3.2	730
3.7	740
2.8	640
2.1	670
2.1	760
3.2	720
2.1	640
3.9	690
2.9	700
2.4	750
2.7	730
3.6	700