The staff at an advertising company took a survey of 350 people, each of whom had visited one of two branches, East and West, of a store. Each
person surveyed was asked whether he or she had purchased a certain
product within the past month. The results of the survey, by location, are
shown in the table.
East West Total
Had purchased the
49 70 119
product
Had not purchased
133 98 231
the product
Total 182 168350