An educational psychologist believes that an individual's reading speed (in words per minute) and general comprehension abilities (scored out of 10) may be related to how well they do on a timed exam. To study the relative importance of these variables and the association between them, she runs a multiple regression and produces the following predictive model for exam score:

Exam Score = 7.78 + (0.05*Reading Speed) + (5.77*Comprehension)

Clickhere(40.8KB)for a description of the above formula.

What exam score would you expect students to achieve if they have a reading speed of 120 w.p.m. and a comprehension score of 5?

Answer

a = 55.67

b = 4726

c = 66.44

d= 42.63