Question: Online polls In June 2008, Parade magazine posed the following question: "Should drivers be banned from using all cell phones?" Readers were encouraged to vote online at parade.com. The July 13, 2008, issue of Parade reported the results: 2407 (85%) said "Yes" and 410 (15%) said "No."
(a) What type of sample did the Parade survey obtain?
(b) Explain why this sampling method is biased. Is 85% probably higher or lower than the true percent of all adults who believe that cell phone use while driving should be banned? Why?