The Wall Street Journal’s Shareholder Scoreboard tracks the performance of 1000 majorU.S. companies (The Wall Street Journal, March 10, XXXXXXXXXXThe performance of each companyis rated based on the...

The Wall Street Journal’s Shareholder Scoreboard tracks the performance of 1000 majorU.S. companies (The Wall Street Journal, March 10, 2003). The performance of each companyis rated based on the annual total return, including stock price changes and the reinvestmentof dividends. Ratings are assigned by dividing all 1000 companies into fivegroups from A (top 20%), B (next 20%), to E (bottom 20%). Shown here are the one-yearratings for a sample of 60 of the largest companies. Do the largest companies differ in performancefrom the performance of the 1000 companies in the Shareholder Scoreboard?Use a  .05.A B C D E5 8 15 20 12