8.84 Video game genres. U.S. computer and video game software sales were $13.26 billion in 2012.29 A survey of 1102 teens collected data about video game use by teens. According to the survey, the following are the most popular game genres:30

Genre Examples Percent who play
Racing NASCAR, Mario Kart, Burnout 74
Puzzle Bejeweled, Tetris, Solitaire 72
Sports Madden, FIFA, Tony Hawk 68
Action Grand Theft Auto, Devil May
Cry, Ratchet and Clank
67
Adventure Legend of Zelda, Tomb Raider 66
Rhythm Guitar Hero, Dance Dance
Revolution, Lumines
61

Give a 95% confidence interval for the proportion who play games in each of these six genres.