2.9 Instant opinion. On January 30, 2015, the Los Angeles Times ran an online poll on its website and asked readers the question, “Which NFL team would you like to see come to L.A.?” Readers could click on one of three buttons (a picture of the Oakland Raiders logo, a picture of the San Diego Chargers logo, and a picture of the St. Louis Rams logo) to vote. In all, 11,908 (33%) selected the Oakland Raiders, 1939 (5%) selected the San Diego Chargers, and 22,138 (62%) selected the St. Louis Rams.
(a) What is the sample size for this poll?
(b) Explain why the poll may give unreliable information.