Use the data and results from question 13 to construct 90 % confidence intervals for b₁ and b₂.

Question 13

The chairperson of the finance department at Rutgers University would like to find the relationship between undergraduate grade point average (UGPA) and GMAT scores on graduate grade point average (GGPA). She collects the following data on six students.

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UGPA, X1 3.45 3.10 3.00 2.95 3.11 2.87 GMAT, x2 485 500 525 560 575 625 GGPA, y 3.62 3.75 3.81 3.88 3.85 3.95