You own a caf called Hams and Jams and you have a website that lets people around the country order your products for delivery. The cost of shipping is different, however, depending on where the customer lives. Area A encompasses a 250 mile radius around your caf, and the shipping is cheaper for customers who live within this region than that for people who live outside it in Area B. You would like to know whether this shipping cost differential has an impact on orders placed through your website. Specifically describe how you would determine this using Google Analytics.