1.22 Choose your study type. What is the best way to answer each of the questions below: an experiment, a sample survey, or an observational study that is not a sample survey? Explain your choices.
(a) Is your school’s football team called for fewer penalties in home games than in away games?
(b) Are college students satisfied with the cost of textbooks that they are required to purchase?
(c) Do college students who have access to video recordings of course lectures perform better in the course than those who don’t?