It's not black and white. A person who goes to the store more often has a greater chance of being tested, than someone who goes infrequently. There's also the

It's not black and white. A person who goes to the store more often has a greater chance of being tested, than someone who goes infrequently. There's also the issue that people are trying to avoid other human beings right now, including the human beings administering tests. People who are social distancing more effectively are less likely to agree to a test.