Annabel, a retail analyst, has been following Under Armour,
Inc., the pioneer in the compression-gear market. Compression
garments are meant to keep moisture away from a wearer’s body
during athletic activities in warm and cool weather. Annabel
believes that the Under Armour brand attracts a younger customer,
whereas the more established companies, Nike and Adidas, draw an
older clientele. In order to test her belief, she collects data on
the age of the customers and whether or not they purchased...