Question 4 (20 points): Suppose you've been hired by the Annual American Research on the Number of Books project to build a model of the number of books in a crosssection of 60 University and college libraries. After reading the literature, you decide to model the number of books as a function of students, number of faculty members, and SAT score of students: VOLEZBG+BLSIUE+E2 FACBS serfs. Twhere VOL_i = number of books in the ith school's library measured in thousands (1,000) STU_i = number of students in the ith school FAC_i = number of faculty members in the ith school SAT_i = the average SALTS of students in the ith school a. (5 points) Using provided data (available on the Blackboard), estimate this model and show your Stara output. Interpret coefficients