Which companies spend the most money on advertising? A news website maintains a list of the top-spending companies. In 2014, Company A spent more than any other company, a whopping $5.30 billion. In second place was Company B, which spent $3.48 billion. The top 12 companies and the amount each spent on advertising in billions of dollars are as follows. Advertising Advertising Company ($ billions) Company ($ billions) A 5.30 G 2.29 B 3.48 H 2.25 C 2.61 I 1.89 D 2.66 J 2.47 E 2.94 K 2.36 F 2.24 L 2.18 (a) What is the mean amount (in billion dollars) spent on advertising? (Round your answer to two decimal places.) $ billion (b) What is the median amount (in billion dollars) spent on advertising? $ billion (c) What are the first and third quartiles (in billion dollars)? first quartile $ billion third quartile $ billion