Forbes magazine published data on the best small firms in 2012. These were firms which had been publicly traded for at least a year, have a stock price of at least \($5\) per share, and have reported annual revenue between \($5\) million and \($1\) billion. Table 1.17 shows the ages of the chief executive officers for the first 60 ranked firms.

a. What is the frequency for CEO ages between 54 and 65?

b. What percentage of CEOs are 65 years or older?

c. What is the relative frequency of ages under 50?

d. What is the cumulative relative frequency for CEOs younger than 55?

e. Which graph shows the relative frequency and which shows the cumulative relative frequency?

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Age Frequency Relative Frequency Cumulative Relative Frequency 40-44 3 45-49 11 50-54 13 55-59 16 60-64 10 65-69 6 70-74 1 Table 1.17