Question

to bepartmental Final Exam - Spring 2019 3. The sales manager of Copier Sales of America, a company with a large s tween the nuof 10 United States and Canada, wants to determine whether there is a relationship sales calls a representative makes and the representatives and determines the number of sales calls each representa number of copiers sold. Summary sample informa sales forceumbe of between number of copiers sold. She selects a random sample ve made last month and the tion is shown below Σχ.-220 ΣΥί 450 ΣΧ/ 5290 ΣΥ?-22100 Σχ.Y.- . = 10800 Using the numbers supplied above, produce equation using variable names. a. above, produce the least quares line and WRITE the estimated regrsn (12 pts) (4 pts) b. Interpret the estimated slope coefficient. Be sure that your answer is specific to this problem. (4 pts) Calculate the correlation coefficient. c.

Answer 1

Solution:

2 20 o, goo S 230 22. L00o 2.2 Ч 50 o Slo pe SSX 0 SO

b) As he obea ofales calls Tncoecue Co so) ThanK you