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 $5.40 billion. In second place was Company B, which spent $3.08 billion. The top 12 companies and the amount each spent on advertising in billions of dollars are as follows. Company Advertising ($ billions) Company Advertising ($ billions) A 5.40 G 2.29 B 3.08 H 2.55 C 3.01 I 1.89 D 2.46 ] 1.87 E 2.64 K 2.26 F 2.34 L 2.28 (a) What is the mean amount (in billion dollars) spent on advertising? (Round your answer to two decimal places.) $2.673 billion (b) What is the median amount (in billion dollars) spent on advertising? 2.4 billion (c) What are the first and third quartiles (in billion dollars)? first quartile $ 2.3 x billion third quartile $ 4.1 X billion