Question: A fitted regression for an exam in Prof. Hardtack's class showed Score = 20 + 7 Study, where Score is the student's exam score and

A fitted regression for an exam in Prof. Hardtack's class showed Score = 20 + 7 Study, where Score is the student's exam score and Study is the student's study hours. The regression yielded R 2 = 0.50 and SE = 8. Bob studied 9 hours. Thequick95 percent prediction interval for Bob's grade is approximately:

a. 69 to 97.

b. 75 to 91.

c. 67 to 99.

d. 76 to 90

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