Write the digits 1,2,3,4 in order on an index card. Bring this card to a busy place (e.g., dining hall, library, university union) and ask at least 30 people to look at the card and select one of the digits at random in their head. Record their responses. (a) If people can think "randomly," about what fraction of the people should respond with the digit 1? 2? 3? 4?
(b) What fraction of those surveyed responded with the digit 1? 2? 3? 4?
(c) Do the results suggest anything about people's ability to choose randomly?