An English professor has estimated the following relationship between English SAT scores (x) and score in the freshman English course (y).

where standard deviations are shown in parentheses. The average SAT score for these students was 550.

(a) What is the students’ average score in this course?

(b) Use the regression equation to predict the English course score for a student with an English SAT score of 400, 500, 600, 700, and 800.

(c) If there is a 50-point difference in the SAT scores of two students at this school, what is the predicted difference in their course scores?

Transcribed Image Text:

=30+.12x R = .35 (.79) (.05)