Stats Question

A college bookstore must order books two months before each semester starts. They believe that the number of books that will ultimately be sold for any particular course is related to the number of students registered for the course when the books are ordered. They would like to develop a linear regression equation to help plan how many books to order. From past records, the bookstore obtains the number of students registered and the number of books actually sold for a course for 10 different semesters. These data are below. Semester Students Books 3'. What is the predicted number of books that would be ordered for a semester with 36 students? Show setupfwork, rounding answer to two places past the decimal. 8. There was a semester that had 36 students and sold 34 books. What is the value ofthe residual for this observation? Show setup and round answer to two places past decimal. Did the LSRL equation overestimate or underestimate how many books would be sold that term? 9. Complete the sentence: If we were to use the LSRL to predict the number of books for a semester that had students, this would be an example of extrapolating. a. 23 b. 42 c. 35 d. 32 The answer is books 28 30 32 34 36 38 students