Textbook cost is one expense that university students often complain about. Does the size of the book (measured by the number of pages) relate to the price of the book (in dollars)?

Use the fitted line plot provided on moodle to answer the following questions; do not do any unnecessary calculations.

13) Based on the scatterplot, what can you say about the relationship between size and price of a book? explain

14) State the regression equation

15) Use the regression equation to find the predicted price, y, for observation 4 (a book with 400 pages)

16) Calculate the residual for observation 4 (the book with 400 pages and cost $128.50)

Fitted Line Plot Price = - 3.42 + 0.1473 Pages 180 5 29.7605 R-5q 67.7% 160 R-Sq(adj) 66.5% 140 120 100 Price 80 60 40 20 0 200 400 600 800 1000 1200 Pages